"Influenza A Virus, H1N1 Subtype"[Mesh] AND "Pregnancy"[Mesh] - Search Results

Year	Number of Results
1981	1
1989	1
2007	1
2008	2
2009	31
2010	51
2011	64
2012	52
2013	34
2014	34
2015	21
2016	19
2017	15
2018	13
2019	20
2020	15
2021	8
2022	8
2023	6
2024	7
2025	7
2026	3

1

Increased dose of H1N1 pandemic influenza vaccine during pregnancy improves immunity in mothers and infants.

Kansara D, Kosikova M, Milletich PL, Zhou J, Coughlan L, Zens MS, Swamy G, Hoen AG, Xie H, Ackerman ME, Pasetti MF; DMID 09-0072 Clinical Study Group. Kansara D, et al. mBio. 2026 Apr 8;17(4):e0390425. doi: 10.1128/mbio.03904-25. Epub 2026 Mar 17. mBio. 2026. PMID: 41841736 Free PMC article.

2

Influenza A Virus (H1N1) Infection Induces Ferroptosis to Promote Developmental Injury in Fetal Tissues.

Jiang Y, Shen Y, Zhang Q, Liu Z, Liu Y, Peng J, Yang X, Gao F, Ou XH, Sun QY, Zhang Q, Wang G. Jiang Y, et al. Cell Prolif. 2026 Mar;59(3):e70117. doi: 10.1111/cpr.70117. Epub 2025 Aug 26. Cell Prolif. 2026. PMID: 40855999 Free PMC article.

3

Neurogenesis decreases in the offspring of mothers infected with influenza A virus.

Rakovskaya A, Lozhkov A, Zabrodskaya Y, Kirenskaya V, Korovina O, Garshinina A, Zryacheva V, Shtro A, Pchitskaya E, Vlasova O, Elpaeva E, Moshkoff D, Salvato M, Bezprozvanny I, Vasin A. Rakovskaya A, et al. Front Cell Infect Microbiol. 2026 Jan 6;15:1704546. doi: 10.3389/fcimb.2025.1704546. eCollection 2025. Front Cell Infect Microbiol. 2026. PMID: 41567998 Free PMC article.

4

Protecting pregnancy during pandemics: What recent outbreaks teach us.

Regan AK, Muñoz FM. Regan AK, et al. Hum Vaccin Immunother. 2025 Dec;21(1):2595779. doi: 10.1080/21645515.2025.2595779. Epub 2025 Dec 10. Hum Vaccin Immunother. 2025. PMID: 41369166 Free PMC article. Review.

5

Influenza a(H1N1) virus infection impairs syncytiotrophoblast functions by promoting ferroptosis through the TNF-α/ISG15/EGR1 axis.

Zhao Y, Wang Y, Huang K, Wang F, Wang Y. Zhao Y, et al. Virol J. 2025 Nov 17;22(1):379. doi: 10.1186/s12985-025-02995-1. Virol J. 2025. PMID: 41250199 Free PMC article.

6

Maternal and late mortality trends, emphasizing the H1N1 and COVID-19 pandemics, in the state of Rio de Janeiro, Brazil, from 2009 to 2021.

Bellizzi ALM, Cascão AM, Brito ADS, Fonseca SC, Kale PL. Bellizzi ALM, et al. Rev Bras Epidemiol. 2025 Jul 21;28:e250037. doi: 10.1590/1980-549720250037. eCollection 2025. Rev Bras Epidemiol. 2025. PMID: 40699054 Free PMC article.

7

Immunogenicity of inactivated quadrivalent influenza vaccine in pregnant women, including the level of postvaccination antibodies in umbilical cord blood.

Zasztowt-Sternicka M, Jagielska A, Rząd M, Szymusik I, Hallmann E, Brydak L, Nitsch-Osuch A. Zasztowt-Sternicka M, et al. Vaccine. 2025 Apr 19;53:127047. doi: 10.1016/j.vaccine.2025.127047. Epub 2025 Apr 8. Vaccine. 2025. PMID: 40203592 Free article.

8

Preexisting vaccine-primed heterosubtypic T cell immunity protects the maternal-fetal unit from adverse influenza outcomes in mice.

Flores Malavet V, Dhume K, Satchmei A, Arvelo AC, Beaird AJ, Annamalai SN, Kimball LA, McKinstry KK, Strutt TM. Flores Malavet V, et al. J Clin Invest. 2025 Jan 2;135(1):e179230. doi: 10.1172/JCI179230. J Clin Invest. 2025. PMID: 39744951 Free PMC article.

9

Hemagglutinin Stalk-Specific Fc-Mediated Functions Are Associated With Protection Against Influenza Illness After Seasonal Influenza Vaccination.

Motsoeneng BM, Dhar N, Nunes MC, Krammer F, Madhi SA, Moore PL, Richardson SI. Motsoeneng BM, et al. J Infect Dis. 2024 Dec 16;230(6):1329-1336. doi: 10.1093/infdis/jiae241. J Infect Dis. 2024. PMID: 38743692 Free PMC article. Clinical Trial.

10

Maternal influenza vaccination and associated risk of fetal loss: A claims-based prospective cohort study.

Regan AK, Sullivan SG, Arah OA. Regan AK, et al. Vaccine. 2024 Dec 2;42(26):126256. doi: 10.1016/j.vaccine.2024.126256. Epub 2024 Sep 10. Vaccine. 2024. PMID: 39260053 Free PMC article.

11

Maternal thirdhand exposure to e-cigarette vapor alters lung and bone marrow immune cell responses in offspring in the absence or presence of influenza infection.

Donovan C, Thorpe AE, Yarak R, Coward-Smith M, Pillar AL, Gomez HM, Feng M, Bai X, Wang M, Xenaki D, Horvat JC, Chen H, Oliver BGG, Kim RY. Donovan C, et al. Am J Physiol Lung Cell Mol Physiol. 2024 Nov 1;327(5):L796-L806. doi: 10.1152/ajplung.00078.2024. Epub 2024 Sep 24. Am J Physiol Lung Cell Mol Physiol. 2024. PMID: 39316673 Free article.

12

Additional breastfeeding data essential to better understand kinetics of A (H1N1) pdm09 strain-specific antibodies induced by placental transfer and natural infection in children from birth to 3 years of age.

Li Y. Li Y. Lancet Microbe. 2024 Sep;5(9):100877. doi: 10.1016/S2666-5247(24)00100-9. Epub 2024 May 16. Lancet Microbe. 2024. PMID: 38763156 Free article. No abstract available.

13

Clinical predictors of severe forms of influenza A(H1N1)pdm09 in adults and children during the 2009 epidemic in Brazil.

Braga JU. Braga JU. PLoS One. 2024 Feb 26;19(2):e0291843. doi: 10.1371/journal.pone.0291843. eCollection 2024. PLoS One. 2024. PMID: 38408061 Free PMC article.

14

Suppression of progesterone by influenza A virus mediates adverse maternal and fetal outcomes in mice.

Creisher PS, Parish MA, Lei J, Liu J, Perry JL, Campbell AD, Sherer ML, Burd I, Klein SL. Creisher PS, et al. mBio. 2024 Feb 14;15(2):e0306523. doi: 10.1128/mbio.03065-23. Epub 2024 Jan 8. mBio. 2024. PMID: 38190129 Free PMC article.

15

Maternal Vaccine Effectiveness Against Influenza-Associated Hospitalizations and Emergency Department Visits in Infants.

Sahni LC, Olson SM, Halasa NB, Stewart LS, Michaels MG, Williams JV, Englund JA, Klein EJ, Staat MA, Schlaudecker EP, Selvarangan R, Schuster JE, Weinberg GA, Szilagyi PG, Boom JA, Patel MM, Muñoz FM; New Vaccine Surveillance Network Collaborators. Sahni LC, et al. JAMA Pediatr. 2024 Feb 1;178(2):176-184. doi: 10.1001/jamapediatrics.2023.5639. JAMA Pediatr. 2024. PMID: 38109102 Free PMC article.

16

Introducing seasonal influenza vaccine in Bhutan: Country experience and achievements.

Wangchuk S, Prabhakaran AO, Dhakal GP, Zangmo C, Gharpure R, Dawa T, Phuntsho S, Burkhardsmeier B, Saha S, Wangmo D, Lafond KE. Wangchuk S, et al. Vaccine. 2023 Nov 22;41(48):7259-7264. doi: 10.1016/j.vaccine.2023.10.053. Epub 2023 Oct 21. Vaccine. 2023. PMID: 37866993 Free PMC article.

17

Transplacental transfer efficiency of maternal antibodies against influenza A(H1N1)pdm09 virus and dynamics of naturally acquired antibodies in Chinese children: a longitudinal, paired mother-neonate cohort study.

Li M, Wang W, Chen J, Zhan Z, Xu M, Liu N, Ren L, You L, Zheng W, Shi H, Zhao Z, Huang C, Chen X, Zheng N, Lu W, Zhou X, Zhou J, Liao Q, Yang J, Jit M, Salje H, Yu H. Li M, et al. Lancet Microbe. 2023 Nov;4(11):e893-e902. doi: 10.1016/S2666-5247(23)00181-7. Epub 2023 Oct 9. Lancet Microbe. 2023. PMID: 37827184 Free article.

18

Safety of influenza vaccination during pregnancy: a systematic review.

Wolfe DM, Fell D, Garritty C, Hamel C, Butler C, Hersi M, Ahmadzai N, Rice DB, Esmaeilisaraji L, Michaud A, Soobiah C, Ghassemi M, Khan PA, Sinilaite A, Skidmore B, Tricco AC, Moher D, Hutton B. Wolfe DM, et al. BMJ Open. 2023 Sep 6;13(9):e066182. doi: 10.1136/bmjopen-2022-066182. BMJ Open. 2023. PMID: 37673449 Free PMC article.

19

Exclusion of pregnant people from emergency vaccine clinical trials: A systematic review of clinical trial protocols and reporting from 2009 to 2019.

Minchin J, Harris GH, Baumann S, Smith ER. Minchin J, et al. Vaccine. 2023 Aug 7;41(35):5159-5181. doi: 10.1016/j.vaccine.2023.06.073. Epub 2023 Jul 11. Vaccine. 2023. PMID: 37442686 Free article.

20

Factors associated with hospitalization for seasonal influenza in Morocco.

Ezzine H, Regragui Z, Cherkaoui I, Naciri M, Filali-Maltouf A, Rguig A, Triki S, Elkholy A, Bimouhen A, Falaki F, Ihazmad H, Benamar T, Oumzil H, Youbi M. Ezzine H, et al. East Mediterr Health J. 2023 Jun 27;29(6):442-450. doi: 10.26719/emhj.23.072. East Mediterr Health J. 2023. PMID: 37551756 Free article.

21

Pregnancy and Severe ARDS with COVID-19: Epidemiology, Diagnosis, Outcomes and Treatment.

Lim MJ, Lakshminrusimha S, Hedriana H, Albertson T. Lim MJ, et al. Semin Fetal Neonatal Med. 2023 Feb;28(1):101426. doi: 10.1016/j.siny.2023.101426. Epub 2023 Mar 7. Semin Fetal Neonatal Med. 2023. PMID: 36964118 Free PMC article. Review.

22

Tropism and Infectivity of Pandemic Influenza A H1N1/09 Virus in the Human Placenta.

Xiao YN, Yu FY, Xu Q, Gu J. Xiao YN, et al. Viruses. 2022 Dec 15;14(12):2807. doi: 10.3390/v14122807. Viruses. 2022. PMID: 36560811 Free PMC article.

23

Genetic characterization and pathogenicity of a Eurasian avian-like H1N1 swine influenza reassortant virus.

Zhu H, Li X, Chen H, Qian P. Zhu H, et al. Virol J. 2022 Dec 2;19(1):205. doi: 10.1186/s12985-022-01936-6. Virol J. 2022. PMID: 36461007 Free PMC article.

24

Viral pulmonary infection in pregnancy - Including COVID-19, SARS, influenza A, and varicella.

Maudhoo A, Khalil A. Maudhoo A, et al. Best Pract Res Clin Obstet Gynaecol. 2022 Dec;85(Pt A):17-25. doi: 10.1016/j.bpobgyn.2022.06.006. Epub 2022 Jul 9. Best Pract Res Clin Obstet Gynaecol. 2022. PMID: 35977871 Free PMC article. Review.

25

Influenza subtype-specific maternal antibodies protect offspring against infection but inhibit vaccine-induced immunity and protection in mice.

Creisher PS, Campbell AD, Perry JL, Roznik K, Burd I, Klein SL. Creisher PS, et al. Vaccine. 2022 Nov 8;40(47):6818-6829. doi: 10.1016/j.vaccine.2022.10.003. Epub 2022 Oct 15. Vaccine. 2022. PMID: 36253217 Free PMC article.

26

Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices - United States, 2022-23 Influenza Season.

Grohskopf LA, Blanton LH, Ferdinands JM, Chung JR, Broder KR, Talbot HK, Morgan RL, Fry AM. Grohskopf LA, et al. MMWR Recomm Rep. 2022 Aug 26;71(1):1-28. doi: 10.15585/mmwr.rr7101a1. MMWR Recomm Rep. 2022. PMID: 36006864 Free PMC article.

27

Severe influenza A in a Tunisian ICU sentinel SARI centre: Epidemiological and clinical features.

Jamoussi A, Ayed S, Merhabene T, Doghri H, Ben Khelil J, Besbes M. Jamoussi A, et al. PLoS One. 2022 Jul 6;17(7):e0270814. doi: 10.1371/journal.pone.0270814. eCollection 2022. PLoS One. 2022. PMID: 35793318 Free PMC article.

28

Parental socioeconomic and psychological determinants of the 2009 pandemic influenza A(H1N1) vaccine uptake in children.

Salo-Tuominen K, Teros-Jaakkola T, Toivonen L, Ollila H, Rautava P, Aromaa M, Lahti E, Junttila N, Peltola V. Salo-Tuominen K, et al. Vaccine. 2022 Jun 9;40(26):3684-3689. doi: 10.1016/j.vaccine.2022.05.012. Epub 2022 May 17. Vaccine. 2022. PMID: 35595660 Free PMC article.

29

Surrogate pregnancy during the COVID-19 pandemic.

Haynes V, Hunter T, Ceruti J, Bowley C, Patel R. Haynes V, et al. CMAJ. 2022 Apr 4;194(13):E492-E494. doi: 10.1503/cmaj.211069. CMAJ. 2022. PMID: 35379661 Free PMC article. No abstract available.

30

Safety of Influenza A H1N1pdm09 Vaccines: An Overview of Systematic Reviews.

Juvet LK, Robertson AH, Laake I, Mjaaland S, Trogstad L. Juvet LK, et al. Front Immunol. 2021 Oct 28;12:740048. doi: 10.3389/fimmu.2021.740048. eCollection 2021. Front Immunol. 2021. PMID: 34777351 Free PMC article.

31

Will prenatal exposure to SARS-CoV-2 define a birth cohort with accelerated aging in the century ahead?

Easterlin MC, Crimmins EM, Finch CE. Easterlin MC, et al. J Dev Orig Health Dis. 2021 Oct;12(5):683-687. doi: 10.1017/S204017442000104X. Epub 2020 Nov 10. J Dev Orig Health Dis. 2021. PMID: 33168125 Free PMC article. Review.

32

Lessons learned from the A (H1N1) influenza pandemic.

Vousden N, Knight M. Vousden N, et al. Best Pract Res Clin Obstet Gynaecol. 2021 Oct;76:41-52. doi: 10.1016/j.bpobgyn.2020.08.006. Epub 2020 Oct 12. Best Pract Res Clin Obstet Gynaecol. 2021. PMID: 33144076 Free PMC article. Review.

33

Centenarians exposed to the Spanish flu in their early life better survived to COVID-19.

Poulain M, Chambre D, Pes GM. Poulain M, et al. Aging (Albany NY). 2021 Sep 27;13(18):21855-21865. doi: 10.18632/aging.203577. Epub 2021 Sep 27. Aging (Albany NY). 2021. PMID: 34570724 Free PMC article.

34

Safety of components and platforms of COVID-19 vaccines considered for use in pregnancy: A rapid review.

Ciapponi A, Bardach A, Mazzoni A, Alconada T, Anderson SA, Argento FJ, Ballivian J, Bok K, Comandé D, Erbelding E, Goucher E, Kampmann B, Karron R, Munoz FM, Palermo MC, Parker EPK, Rodriguez Cairoli F, Santa María V, Stergachis AS, Voss G, Xiong X, Zamora N, Zaraa S, Berrueta M, Buekens PM. Ciapponi A, et al. Vaccine. 2021 Sep 24;39(40):5891-5908. doi: 10.1016/j.vaccine.2021.08.034. Epub 2021 Aug 13. Vaccine. 2021. PMID: 34489131 Free PMC article.

35

A case report of acquired hemophilia following COVID-19 vaccine.

Radwi M, Farsi S. Radwi M, et al. J Thromb Haemost. 2021 Jun;19(6):1515-1518. doi: 10.1111/jth.15291. Epub 2021 May 10. J Thromb Haemost. 2021. PMID: 33783953 Free PMC article.

36

The effect of influenza virus infection on pregnancy outcomes: A systematic review and meta-analysis of cohort studies.

Wang R, Yan W, Du M, Tao L, Liu J. Wang R, et al. Int J Infect Dis. 2021 Apr;105:567-578. doi: 10.1016/j.ijid.2021.02.095. Epub 2021 Feb 27. Int J Infect Dis. 2021. PMID: 33647509 Free article.

37

Comparison of influenza antibody titers among women who were vaccinated in the 2^nd and the 3^rd trimesters of pregnancy.

Kittikraisak W, Phadungkiatwatana P, Ditsungnoen D, Kaoiean S, Macareo L, Rungrojcharoenkit K, Srisantiroj N, Chotpitayasunondh T, Dawood FS, Mott JA, Lindblade KA. Kittikraisak W, et al. Vaccine. 2021 Jan 3;39(1):18-25. doi: 10.1016/j.vaccine.2020.11.032. Epub 2020 Nov 23. Vaccine. 2021. PMID: 33243634 Free article.

38

Maternal Antibodies Against Influenza in Cord Blood and Protection Against Laboratory-Confirmed Influenza in Infants.

Cowling BJ, Perera RAPM, Fang VJ, Chu DKW, Hui APW, Yeung APC, Peiris JSM, Wong WHS, Chan ELY, Chiu SS. Cowling BJ, et al. Clin Infect Dis. 2020 Oct 23;71(7):1741-1748. doi: 10.1093/cid/ciz1058. Clin Infect Dis. 2020. PMID: 31665236 Free article.

39

Immunogenicity of influenza vaccines administered to pregnant women in randomized clinical trials in Mali and South Africa.

Amin AB, Nunes MC, Tapia MD, Madhi SA, Cutland CL, Wairagkar N, Omer SB; for BMGF Supported Maternal Influenza Immunization Trials Investigators Group. Amin AB, et al. Vaccine. 2020 Sep 22;38(41):6478-6483. doi: 10.1016/j.vaccine.2020.07.020. Epub 2020 Aug 29. Vaccine. 2020. PMID: 32868130 Free PMC article.

40

Maternal Influenza A Virus Infection Restricts Fetal and Placental Growth and Adversely Affects the Fetal Thymic Transcriptome.

Van Campen H, Bishop JV, Abrahams VM, Bielefeldt-Ohmann H, Mathiason CK, Bouma GJ, Winger QA, Mayo CE, Bowen RA, Hansen TR. Van Campen H, et al. Viruses. 2020 Sep 8;12(9):1003. doi: 10.3390/v12091003. Viruses. 2020. PMID: 32911797 Free PMC article.

41

Seroepidemiology of seasonal influenza virus among unvaccinated pregnant women in Lagos, Nigeria.

Anjorin AAA, Nwammadu JE. Anjorin AAA, et al. Infez Med. 2020 Sep 1;28(3):407-415. Infez Med. 2020. PMID: 32920577 Free article.

42

Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices - United States, 2020-21 Influenza Season.

Grohskopf LA, Alyanak E, Broder KR, Blanton LH, Fry AM, Jernigan DB, Atmar RL. Grohskopf LA, et al. MMWR Recomm Rep. 2020 Aug 21;69(8):1-24. doi: 10.15585/mmwr.rr6908a1. MMWR Recomm Rep. 2020. PMID: 32820746 Free PMC article.

43

Hemagglutinin Stalk Antibody Responses Following Trivalent Inactivated Influenza Vaccine Immunization of Pregnant Women and Association With Protection From Influenza Virus Illness.

Dhar N, Kwatra G, Nunes MC, Cutland C, Izu A, Nachbagauer R, Krammer F, Madhi SA. Dhar N, et al. Clin Infect Dis. 2020 Aug 14;71(4):1072-1079. doi: 10.1093/cid/ciz927. Clin Infect Dis. 2020. PMID: 31565750 Free PMC article.

44

Single-cell RNA-seq Analysis Reveals That Prenatal Arsenic Exposure Results in Long-term, Adverse Effects on Immune Gene Expression in Response to Influenza A Infection.

Hsu KS, Goodale BC, Ely KH, Hampton TH, Stanton BA, Enelow RI. Hsu KS, et al. Toxicol Sci. 2020 Aug 1;176(2):312-328. doi: 10.1093/toxsci/kfaa080. Toxicol Sci. 2020. PMID: 32514536 Free PMC article.

45

Factors that influence vaccination decision-making among pregnant women: A systematic review and meta-analysis.

Kilich E, Dada S, Francis MR, Tazare J, Chico RM, Paterson P, Larson HJ. Kilich E, et al. PLoS One. 2020 Jul 9;15(7):e0234827. doi: 10.1371/journal.pone.0234827. eCollection 2020. PLoS One. 2020. PMID: 32645112 Free PMC article.

46

[Pandemic preparedness on a maternity ward].

Kippervik J, Selmer-Olsen T, Magnussen EB, Løvvik TS. Kippervik J, et al. Tidsskr Nor Laegeforen. 2020 Apr 3;140(7). doi: 10.4045/tidsskr.20.0270. Print 2020 May 5. Tidsskr Nor Laegeforen. 2020. PMID: 32378862 Free article. Norwegian. No abstract available.

47

Impact of media reports regarding influenza vaccine on obstetricians' vaccination practices.

O'Leary ST, Cataldi JR, Lindley MC, Hurley LP, Riley LE, Brtnikova M, Crane LA, Beaty B, Stokley S, Fisher A, Kempe A. O'Leary ST, et al. Vaccine. 2020 Apr 16;38(18):3474-3479. doi: 10.1016/j.vaccine.2020.02.051. Epub 2020 Mar 21. Vaccine. 2020. PMID: 32204941 Free PMC article.

48

Seasonal and pandemic influenza during pregnancy and risk of fetal death: A Norwegian registry-based cohort study.

Gunnes N, Gjessing HK, Bakken IJ, Ghaderi S, Gran JM, Hungnes O, Magnus P, Samuelsen SO, Skrondal A, Stoltenberg C, Trogstad L, Wilcox AJ, Håberg SE. Gunnes N, et al. Eur J Epidemiol. 2020 Apr;35(4):371-379. doi: 10.1007/s10654-020-00600-z. Epub 2020 Jan 16. Eur J Epidemiol. 2020. PMID: 31950373 Free PMC article.

49

Assessment of Effectiveness of Seasonal Influenza Vaccination During Pregnancy in Preventing Influenza Infection in Infants in England, 2013-2014 and 2014-2015.

Walker JL, Zhao H, Dabrera G, Andrews N, Thomas SL, Tsang C, Ellis J, Donati M, Pebody RG. Walker JL, et al. J Infect Dis. 2020 Jan 1;221(1):16-20. doi: 10.1093/infdis/jiz310. J Infect Dis. 2020. PMID: 31711165 Free article.

50

Influenza epidemiology in patients admitted to sentinel Australian hospitals in 2018: the Influenza Complications Alert Network (FluCAN).

Cheng AC, Holmes M, Dwyer DE, Senanayake S, Cooley L, Irving LB, Simpson G, Korman T, Macartney K, Friedman ND, Wark P, Howell A, Blyth CC, Crawford N, Buttery J, Bowler S, Upham JW, Waterer GW, Kotsimbos T, Kelly PM. Cheng AC, et al. Commun Dis Intell (2018). 2019 Nov 18;43. doi: 10.33321/cdi.2019.43.48. Commun Dis Intell (2018). 2019. PMID: 31738866 Free article.

51

Medical Outcomes in Women Who Became Pregnant after Vaccination with a Virus-Like Particle Experimental Vaccine against Influenza A (H1N1) 2009 Virus Tested during 2009 Pandemic Outbreak.

Cérbulo-Vázquez A, Arriaga-Pizano L, Cruz-Cureño G, Boscó-Gárate I, Ferat-Osorio E, Pastelin-Palacios R, Figueroa-Damian R, Castro-Eguiluz D, Mancilla-Ramirez J, Isibasi A, López-Macías C. Cérbulo-Vázquez A, et al. Viruses. 2019 Sep 17;11(9):868. doi: 10.3390/v11090868. Viruses. 2019. PMID: 31533277 Free PMC article.

52

Clinical and economic analysis of the 2009 H1N1 influenza pandemic among pregnant Korean women.

Choi WS, Choi MJ, Noh JY, Song JY, Kim WJ, Park DW, Lee J, Seo YB, Baek JH, Choi S, Cheong HJ. Choi WS, et al. Korean J Intern Med. 2019 Sep;34(5):1136-1144. doi: 10.3904/kjim.2017.107. Epub 2017 Dec 15. Korean J Intern Med. 2019. PMID: 29232939 Free PMC article.

53

Influenza vaccination in pregnancy among a group of remote dwelling Aboriginal and Torres Strait Islander mothers in the Northern Territory: The 1+1 Healthy Start to Life study.

McHugh L, Binks MJ, Gao Y, Andrews RM, Ware RS, Snelling T, Kildea S. McHugh L, et al. Commun Dis Intell (2018). 2019 Aug 15;43. doi: 10.33321/cdi.2019.43.33. Commun Dis Intell (2018). 2019. PMID: 31426733 Free article.

54

The Long-Lasting Influenza: The Impact of Fetal Stress During the 1918 Influenza Pandemic on Socioeconomic Attainment and Health in Sweden, 1968-2012.

Helgertz J, Bengtsson T. Helgertz J, et al. Demography. 2019 Aug;56(4):1389-1425. doi: 10.1007/s13524-019-00799-x. Demography. 2019. PMID: 31325150 Free PMC article.

55

Birth Cohort Effects in Influenza Surveillance Data: Evidence That First Influenza Infection Affects Later Influenza-Associated Illness.

Budd AP, Beacham L, Smith CB, Garten RJ, Reed C, Kniss K, Mustaquim D, Ahmad FB, Cummings CN, Garg S, Levine MZ, Fry AM, Brammer L. Budd AP, et al. J Infect Dis. 2019 Jul 31;220(5):820-829. doi: 10.1093/infdis/jiz201. J Infect Dis. 2019. PMID: 31053844 Free PMC article.

56

Health outcomes of young children born to mothers who received 2009 pandemic H1N1 influenza vaccination during pregnancy: retrospective cohort study.

Walsh LK, Donelle J, Dodds L, Hawken S, Wilson K, Benchimol EI, Chakraborty P, Guttmann A, Kwong JC, MacDonald NE, Ortiz JR, Sprague AE, Top KA, Walker MC, Wen SW, Fell DB. Walsh LK, et al. BMJ. 2019 Jul 10;366:l4151. doi: 10.1136/bmj.l4151. BMJ. 2019. PMID: 31292120 Free PMC article.

57

Influenza-Associated Outcomes Among Pregnant, Postpartum, and Nonpregnant Women of Reproductive Age.

Prasad N, Huang QS, Wood T, Aminisani N, McArthur C, Baker MG, Seeds R, Thompson MG, Widdowson MA, Newbern EC. Prasad N, et al. J Infect Dis. 2019 May 24;219(12):1893-1903. doi: 10.1093/infdis/jiz035. J Infect Dis. 2019. PMID: 30690449 Free article.

58

Influenza epidemiology and influenza vaccine effectiveness during the 2015-2016 season: results from the Global Influenza Hospital Surveillance Network.

Puig-Barberà J, Mira-Iglesias A, Burtseva E, Cowling BJ, Serhat U, Ruiz-Palacios GM, Launay O, Kyncl J, Koul P, Siqueira MM, Sominina A; Global Influenza Hospital Surveillance Network. Puig-Barberà J, et al. BMC Infect Dis. 2019 May 14;19(1):415. doi: 10.1186/s12879-019-4017-0. BMC Infect Dis. 2019. PMID: 31088481 Free PMC article.

59

Pregnancy Induces a Steady-State Shift in Alveolar Macrophage M1/M2 Phenotype That Is Associated With a Heightened Severity of Influenza Virus Infection: Mechanistic Insight Using Mouse Models.

Lauzon-Joset JF, Scott NM, Mincham KT, Stumbles PA, Holt PG, Strickland DH. Lauzon-Joset JF, et al. J Infect Dis. 2019 May 5;219(11):1823-1831. doi: 10.1093/infdis/jiy732. J Infect Dis. 2019. PMID: 30576502 Free article.

60

Influenza epidemiology and influenza vaccine effectiveness during the 2016-2017 season in the Global Influenza Hospital Surveillance Network (GIHSN).

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Influenza Vaccine Effectiveness in Preventing Influenza-associated Hospitalizations During Pregnancy: A Multi-country Retrospective Test Negative Design Study, 2010-2016.

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Hospital-acquired influenza in an Australian tertiary Centre 2017: a surveillance based study.

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A pilot study showing a stronger H1N1 influenza vaccination response during pregnancy in women who subsequently deliver preterm.

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Antibody levels in a cohort of pregnant women after the 2009 influenza A(H1N1) pandemic: Waning and association with self-reported severity and duration of illness.

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The impact of timing of maternal influenza immunization on infant antibody levels at birth.

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Outcomes of infants born to women with influenza A(H1N1)pdm09.

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Influenza infections in Australia 2009-2015: is there a combined effect of age and sex on susceptibility to virus subtypes?

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Maternal Influenza Vaccination and the Risk of Laboratory-Confirmed Influenza Among Household Contacts Under the Age of Five in Mali.

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The safety of inactivated influenza vaccines in pregnancy for birth outcomes: a systematic review.

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Vitamin A Supplementation during Pregnancy Enhances Pandemic H1N1 Vaccine Response in Mothers, but Enhancement of Transplacental Antibody Transfer May Depend on When Mothers Are Vaccinated during Pregnancy.

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Evaluation of Influenza A H1N1 infection and antiviral utilization in a tertiary care hospital.

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Hormonal Regulation of Physiology, Innate Immunity and Antibody Response to H1N1 Influenza Virus Infection During Pregnancy.

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Risk of pregnancy complications and adverse birth outcomes after maternal A(H1N1)pdm09 influenza: a Norwegian population-based cohort study.

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Pregnancy preserves pulmonary function following influenza virus infection in C57BL/6 mice.

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Declining responsiveness to influenza vaccination with progression of human pregnancy.

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Birth outcomes following immunization of pregnant women with pandemic H1N1 influenza vaccine 2009-2010.

Eaton A, Lewis N, Fireman B, Hansen J, Baxter R, Gee J, Klein NP. Eaton A, et al. Vaccine. 2018 May 3;36(19):2733-2739. doi: 10.1016/j.vaccine.2017.08.080. Epub 2017 Sep 13. Vaccine. 2018. PMID: 28917536 Free PMC article.

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In utero exposure to the 1918 pandemic influenza in Denmark and risk of dementia.

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Severe influenza A(H1N1)pdm09 in pregnant women and neonatal outcomes, State of Sao Paulo, Brazil, 2009.

Ribeiro AF, Pellini ACG, Kitagawa BY, Marques D, Madalosso G, Fred J, Albernaz RKM, Carvalhanas TRMP, Zanetta DMT. Ribeiro AF, et al. PLoS One. 2018 Mar 26;13(3):e0194392. doi: 10.1371/journal.pone.0194392. eCollection 2018. PLoS One. 2018. PMID: 29579099 Free PMC article. Clinical Trial.

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Update: Influenza Activity - United States, October 1, 2017-February 3, 2018.

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Dysregulated T-Helper Type 1 (Th1):Th2 Cytokine Profile and Poor Immune Response in Pregnant Ferrets Infected With 2009 Pandemic Influenza A(H1N1) Virus.

Yoon SW, Wong SS, Zhu H, Chen R, Li L, Zhang Y, Guan Y, Webby RJ. Yoon SW, et al. J Infect Dis. 2018 Jan 17;217(3):438-442. doi: 10.1093/infdis/jix328. J Infect Dis. 2018. PMID: 28973317 Free PMC article.

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H1N1 influenza virus infection results in adverse pregnancy outcomes by disrupting tissue-specific hormonal regulation.

Littauer EQ, Esser ES, Antao OQ, Vassilieva EV, Compans RW, Skountzou I. Littauer EQ, et al. PLoS Pathog. 2017 Nov 27;13(11):e1006757. doi: 10.1371/journal.ppat.1006757. eCollection 2017 Nov. PLoS Pathog. 2017. PMID: 29176767 Free PMC article.

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Distinct T and NK cell populations may serve as immune correlates of protection against symptomatic pandemic influenza A(H1N1) virus infection during pregnancy.

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Seasonal influenza vaccine effectiveness against laboratory-confirmed influenza in 2015-2016: a hospital-based test-negative case-control study in Lithuania.

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Association of spontaneous abortion with receipt of inactivated influenza vaccine containing H1N1pdm09 in 2010-11 and 2011-12.

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Effects of prior influenza virus vaccination on maternal antibody responses: Implications for achieving protection in the newborns.

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Equalizing access to pandemic influenza vaccines through optimal allocation to public health distribution points.

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Microneedle patch delivery of influenza vaccine during pregnancy enhances maternal immune responses promoting survival and long-lasting passive immunity to offspring.

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The effects of prenatal H1N1 infection at E16 on FMRP, glutamate, GABA, and reelin signaling systems in developing murine cerebellum.

Fatemi SH, Folsom TD, Liesch SB, Kneeland RE, Karkhane Yousefi M, Thuras PD. Fatemi SH, et al. J Neurosci Res. 2017 May;95(5):1110-1122. doi: 10.1002/jnr.23949. Epub 2016 Oct 13. J Neurosci Res. 2017. PMID: 27735078 Free PMC article.

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Engels G, Hierweger AM, Hoffmann J, Thieme R, Thiele S, Bertram S, Dreier C, Resa-Infante P, Jacobsen H, Thiele K, Alawi M, Indenbirken D, Grundhoff A, Siebels S, Fischer N, Stojanovska V, Muzzio D, Jensen F, Karimi K, Mittrücker HW, Arck PC, Gabriel G. Engels G, et al. Cell Host Microbe. 2017 Mar 8;21(3):321-333. doi: 10.1016/j.chom.2017.02.020. Cell Host Microbe. 2017. PMID: 28279344 Free article.

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Update: Influenza Activity - United States, October 2, 2016-February 4, 2017.

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H1N1 influenza vaccination in HIV-infected women on effective antiretroviral treatment did not induce measurable antigen-driven proliferation of the HIV-1 proviral reservoir.

Wagner TA, Huang HC, Salyer CE, Richardson KM, Weinberg A, Nachman S, Frenkel LM. Wagner TA, et al. AIDS Res Ther. 2017 Feb 13;14(1):7. doi: 10.1186/s12981-017-0135-1. AIDS Res Ther. 2017. PMID: 28193244 Free PMC article.

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Seropositivity of influenza A H1NI in mothers and infants following maternal vaccination with trivalent seasonal influenza vaccine after the 2009 pandemic.

Chao AS, Chang YL, Chao A, Wu TS, Yang LY, Lian R, Huang YC. Chao AS, et al. Taiwan J Obstet Gynecol. 2017 Feb;56(1):37-40. doi: 10.1016/j.tjog.2016.08.007. Taiwan J Obstet Gynecol. 2017. PMID: 28254223 Free article.

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Maternal influenza and birth outcomes: systematic review of comparative studies.

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Influenza Vaccination Coverage During Pregnancy - Selected Sites, United States, 2005-06 Through 2013-14 Influenza Vaccine Seasons.

Kerr S, Van Bennekom CM, Mitchell AA; Vaccines and Medications in Pregnancy Surveillance System. Kerr S, et al. MMWR Morb Mortal Wkly Rep. 2016 Dec 9;65(48):1370-1373. doi: 10.15585/mmwr.mm6548a3. MMWR Morb Mortal Wkly Rep. 2016. PMID: 27932781 Free article.

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Epidemiological & clinical profile of influenza A (H1N1) 2009 virus infections during 2015 epidemic in Rajasthan.

Malhotra B, Singh R, Sharma P, Meena D, Gupta J, Atreya A, Meena BR. Malhotra B, et al. Indian J Med Res. 2016 Dec;144(6):918-923. doi: 10.4103/ijmr.IJMR_1183_15. Indian J Med Res. 2016. PMID: 28474629 Free PMC article.

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A DESCRIPTIVE STUDY OF PANDEMIC INFLUENZA A(H1N1)PDM09 IN BRAZIL, 2009 - 2010.

Rossetto EV, Luna EJ. Rossetto EV, et al. Rev Inst Med Trop Sao Paulo. 2016 Nov 3;58:78. doi: 10.1590/S1678-9946201658078. Rev Inst Med Trop Sao Paulo. 2016. PMID: 27828619 Free PMC article.

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Influenza vaccination coverage among pregnant Indigenous women in the Northern Territory of Australia.

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The Effects of Influenza Vaccination during Pregnancy on Birth Outcomes: A Systematic Review and Meta-Analysis.

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Maternally-derived antibodies do not prevent transmission of swine influenza A virus between pigs.

Cador C, Hervé S, Andraud M, Gorin S, Paboeuf F, Barbier N, Quéguiner S, Deblanc C, Simon G, Rose N. Cador C, et al. Vet Res. 2016 Aug 17;47(1):86. doi: 10.1186/s13567-016-0365-6. Vet Res. 2016. PMID: 27530456 Free PMC article.

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Infant Respiratory Outcomes Associated with Prenatal Exposure to Maternal 2009 A/H1N1 Influenza Vaccination.

Fell DB, Wilson K, Ducharme R, Hawken S, Sprague AE, Kwong JC, Smith G, Wen SW, Walker MC. Fell DB, et al. PLoS One. 2016 Aug 3;11(8):e0160342. doi: 10.1371/journal.pone.0160342. eCollection 2016. PLoS One. 2016. PMID: 27486858 Free PMC article.

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Circulating Influenza Virus and Adverse Pregnancy Outcomes: A Time-Series Study.

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Risk of Preterm or Small-for-Gestational-Age Birth After Influenza Vaccination During Pregnancy: Caveats When Conducting Retrospective Observational Studies.

Vazquez-Benitez G, Kharbanda EO, Naleway AL, Lipkind H, Sukumaran L, McCarthy NL, Omer SB, Qian L, Xu S, Jackson ML, Vijayadev V, Klein NP, Nordin JD. Vazquez-Benitez G, et al. Am J Epidemiol. 2016 Aug 1;184(3):176-86. doi: 10.1093/aje/kww043. Epub 2016 Jul 22. Am J Epidemiol. 2016. PMID: 27449414 Free PMC article.

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Detectable Risks in Studies of the Fetal Benefits of Maternal Influenza Vaccination.

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Laboratory-confirmed deaths caused by influenza A (H1N1)pdm09 in the Santa Catarina State, Brazil, 2009-2014.

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Influenza in Infants Born to Women Vaccinated During Pregnancy.

Shakib JH, Korgenski K, Presson AP, Sheng X, Varner MW, Pavia AT, Byington CL. Shakib JH, et al. Pediatrics. 2016 Jun;137(6):e20152360. doi: 10.1542/peds.2015-2360. Epub 2016 May 2. Pediatrics. 2016. PMID: 27244843 Free PMC article.

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Severe maternal morbidity due to respiratory disease and impact of 2009 H1N1 influenza A pandemic in Brazil: results from a national multicenter cross-sectional study.

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Pandemic vaccination strategies and influenza severe outcomes during the influenza A(H1N1)pdm09 pandemic and the post-pandemic influenza season: the Nordic experience.

Gil Cuesta J, Aavitsland P, Englund H, Gudlaugsson Ó, Hauge SH, Lyytikäinen O, Sigmundsdóttir G, Tegnell A, Virtanen M; Nordic influenza comparison group; Krause TG. Gil Cuesta J, et al. Euro Surveill. 2016 Apr 21;21(16). doi: 10.2807/1560-7917.ES.2016.21.16.30208. Euro Surveill. 2016. PMID: 27123691 Free article.

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Extracorporeal life support during pregnancy.

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Update: Influenza Activity--United States, October 4, 2015-February 6, 2016.

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Regulation of Matrix Metalloproteinases-2 and -9 Gene Expression in Cultured Human Fetal Membrane Cells by Influenza Virus Infection.

Uchide N, Obatake K, Yamada R, Sadanari H, Matsubara K, Murayama T, Ohyama K. Uchide N, et al. Biol Pharm Bull. 2016;39(12):1912-1921. doi: 10.1248/bpb.b16-00093. Biol Pharm Bull. 2016. PMID: 27904034 Free article.

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Maternal vaccination against H1N1 influenza and offspring mortality: population based cohort study and sibling design.

Ludvigsson JF, Ström P, Lundholm C, Cnattingius S, Ekbom A, Örtqvist Å, Feltelius N, Granath F, Stephansson O. Ludvigsson JF, et al. BMJ. 2015 Nov 16;351:h5585. doi: 10.1136/bmj.h5585. BMJ. 2015. PMID: 26572546 Free PMC article.

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Heterogeneity of T Cell Responses to Pandemic pH1N1 Monovalent Vaccine in HIV-Infected Pregnant Women.

Weinberg A, Muresan P, Richardson K, Fenton T, Dominguez T, Bloom A, Watts DH, Abzug MJ, Nachman SA, Levin MJ; P1086 Study Team. Weinberg A, et al. AIDS Res Hum Retroviruses. 2015 Nov;31(11):1170-7. doi: 10.1089/aid.2015.0151. Epub 2015 Aug 31. AIDS Res Hum Retroviruses. 2015. PMID: 26322930 Free PMC article.

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Influenza Transmission in the Mother-Infant Dyad Leads to Severe Disease, Mammary Gland Infection, and Pathogenesis by Regulating Host Responses.

Paquette SG, Banner D, Huang SS, Almansa R, Leon A, Xu L, Bartoszko J, Kelvin DJ, Kelvin AA. Paquette SG, et al. PLoS Pathog. 2015 Oct 8;11(10):e1005173. doi: 10.1371/journal.ppat.1005173. eCollection 2015 Oct. PLoS Pathog. 2015. PMID: 26448646 Free PMC article.

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Early estimation of pandemic influenza Antiviral and Vaccine Effectiveness (EAVE): use of a unique community and laboratory national data-linked cohort study.

Simpson CR, Lone N, McMenamin J, Gunson R, Robertson C, Ritchie LD, Sheikh A. Simpson CR, et al. Health Technol Assess. 2015 Oct;19(79):1-32. doi: 10.3310/hta19790. Health Technol Assess. 2015. PMID: 26450686 Free PMC article.

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Knowledge, Attitudes, and Practices of Obstetrician-Gynecologists Regarding Influenza Prevention and Treatment Following the 2009 H1N1 Pandemic.

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Pregnancy-Related Mortality Resulting From Influenza in the United States During the 2009-2010 Pandemic.

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Antibody response to influenza A(H1N1)pdm09 in vaccinated, serologically infected and unaffected pregnant women and their newborns.

Helmig RB, Maimburg RD, Erikstrup C, Nielsen HS, Petersen OB, Nielsen LP, Hvidman L, Veirum JE, Henriksen TB, Storgaard M. Helmig RB, et al. Acta Obstet Gynecol Scand. 2015 Aug;94(8):833-9. doi: 10.1111/aogs.12668. Epub 2015 May 26. Acta Obstet Gynecol Scand. 2015. PMID: 25958884 Free PMC article.

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Demographic and clinical characteristics of deaths associated with influenza A(H1N1) pdm09 in Central America and Dominican Republic 2009-2010.

Chacon R, Mirza S, Rodriguez D, Paredes A, Guzman G, Moreno L, Then CJ, Jara J, Blanco N, Bonilla L, Clara WA, Minaya P, Palekar R, Azziz-Baumgartner E. Chacon R, et al. BMC Public Health. 2015 Jul 31;15:734. doi: 10.1186/s12889-015-2064-z. BMC Public Health. 2015. PMID: 26227404 Free PMC article.

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2010 A(H1N1) vaccination in pregnant women in Brazil: identifying coverage and associated factors.

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Degree of adherence to recommended antiviral treatment during the pandemic and post-pandemic periods of influenza A(H1N1)pdm09 in 148 intensive care units in Spain.

Canadell L, Martín-Loeches I, Díaz E, Trefler S, Grau S, Yebenes JC, Almirall J, Olona M, Sureda F, Blanquer J, Rodriguez A; GETGAG. Canadell L, et al. Med Intensiva. 2015 May;39(4):222-33. doi: 10.1016/j.medin.2014.06.001. Epub 2014 Aug 5. Med Intensiva. 2015. PMID: 25107582 Free article. English, Spanish.

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"If they tell me to get it, I'll get it. If they don't...": Immunization decision-making processes of immigrant mothers.

Kowal SP, Jardine CG, Bubela TM. Kowal SP, et al. Can J Public Health. 2015 Apr 29;106(4):e230-5. doi: 10.17269/cjph.106.4803. Can J Public Health. 2015. PMID: 26285195 Free PMC article.

122

Beyond resistance: social factors in the general public response to pandemic influenza.

Davis MD, Stephenson N, Lohm D, Waller E, Flowers P. Davis MD, et al. BMC Public Health. 2015 Apr 29;15:436. doi: 10.1186/s12889-015-1756-8. BMC Public Health. 2015. PMID: 25926035 Free PMC article.

123

The Lao Experience in Deploying Influenza A(H1N1)pdm09 Vaccine: Lessons Made Relevant in Preparing for Present Day Pandemic Threats.

Xeuatvongsa A, Mirza S, Winter C, Feldon K, Vongphrachanh P, Phonekeo D, Denny J, Khanthamaly V, Kounnavong B, Lylianou D, Phousavath S, Norasingh S, Boutta N, Olsen S, Bresee J, Moen A, Corwin A. Xeuatvongsa A, et al. PLoS One. 2015 Apr 29;10(4):e0121717. doi: 10.1371/journal.pone.0121717. eCollection 2015. PLoS One. 2015. PMID: 25923779 Free PMC article.

124

Determinants of vaccine immunogenicity in HIV-infected pregnant women: analysis of B and T cell responses to pandemic H1N1 monovalent vaccine.

Weinberg A, Muresan P, Richardson KM, Fenton T, Dominguez T, Bloom A, Watts DH, Abzug MJ, Nachman SA, Levin MJ; P1086 team. Weinberg A, et al. PLoS One. 2015 Apr 13;10(4):e0122431. doi: 10.1371/journal.pone.0122431. eCollection 2015. PLoS One. 2015. PMID: 25874544 Free PMC article.

125

Clinical aspects of influenza A(H1N1)pdm09 cases reported during the pandemic in Brazil, 2009-2010.

Rossetto ÉV, Luna EJ. Rossetto ÉV, et al. Einstein (Sao Paulo). 2015 Apr-Jun;13(2):177-82. doi: 10.1590/S1679-45082015AO3331. Einstein (Sao Paulo). 2015. PMID: 26154537 Free PMC article.

126

The placental protein syncytin-1 impairs antiviral responses and exaggerates inflammatory responses to influenza.

Tolosa JM, Parsons KS, Hansbro PM, Smith R, Wark PA. Tolosa JM, et al. PLoS One. 2015 Apr 1;10(4):e0118629. doi: 10.1371/journal.pone.0118629. eCollection 2015. PLoS One. 2015. PMID: 25831059 Free PMC article.

127

Update: Influenza activity--United States, September 28, 2014-February 21, 2015.

D'Mello T, Brammer L, Blanton L, Kniss K, Smith S, Mustaquim D, Steffens C, Dhara R, Cohen J, Chaves SS, Finelli L, Bresee J, Wallis T, Xu X, Abd Elal AI, Gubareva L, Wentworth D, Villanueva J, Katz J, Jernigan D; Centers for Disease Control and Prevention (CDC). D'Mello T, et al. MMWR Morb Mortal Wkly Rep. 2015 Mar 6;64(8):206-12. MMWR Morb Mortal Wkly Rep. 2015. PMID: 25742380 Free PMC article.

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Increasing uptake of influenza vaccine by pregnant women post H1N1 pandemic: a longitudinal study in Melbourne, Australia, 2010 to 2014.

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Events supposedly attributable to vaccination or immunization during pandemic influenza A (H1N1) vaccination campaigns in Latin America and the Caribbean.

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Airway mucosal immune-suppression in neonates of mothers receiving A(H1N1)pnd09 vaccination during pregnancy.

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Return of pandemic H1N1 influenza virus.

Sherbany H, McCauley J, Meningher T, Hindiyeh M, Dichtiar R, Markovich MP, Mendelson E, Mandelboim M. Sherbany H, et al. BMC Infect Dis. 2014 Dec 31;14:710. doi: 10.1186/s12879-014-0710-1. BMC Infect Dis. 2014. PMID: 25551676 Free PMC article.

132

[Infuenzae A (H1N1): about 189 cases].

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133

An AGM model for changes in complement during pregnancy: neutralization of influenza virus by serum is diminished in late third trimester.

Mayer AE, Parks GD. Mayer AE, et al. PLoS One. 2014 Nov 19;9(11):e112749. doi: 10.1371/journal.pone.0112749. eCollection 2014. PLoS One. 2014. PMID: 25409303 Free PMC article.

134

Effectiveness of seasonal influenza vaccination during pregnancy in preventing influenza infection in infants, England, 2013/14.

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Molecular findings from influenza A(H1N1)pdm09 detected in patients from a Brazilian equatorial region during the pandemic period.

Oliveira MJ, Motta Fdo C, Siqueira MM, Resende PC, Born Pda S, Souza TM, Mesquita M, Oliveira Mde L, Carney S, Mello WA, Magalhães V. Oliveira MJ, et al. Mem Inst Oswaldo Cruz. 2014 Nov;109(7):912-7. doi: 10.1590/0074-0276140210. Epub 2014 Oct 14. Mem Inst Oswaldo Cruz. 2014. PMID: 25410995 Free PMC article.

136

Seasonal influenza vaccination during pregnancy and the risks of preterm delivery and small for gestational age birth.

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137

Association of age and comorbidity on 2009 influenza A pandemic H1N1-related intensive care unit stay in Massachusetts.

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138

A qualitative study of vaccine acceptability and decision making among pregnant women in Morocco during the A (H1N1) pdm09 pandemic.

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139

Enhanced natural killer-cell and T-cell responses to influenza A virus during pregnancy.

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140

Fetal hemodynamic changes in pregnant women with influenza AH1N1 infection and reduced arterial partial pressure of oxygen.

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141

Pregnant women infected with pandemic H1N1pdm2009 influenza virus displayed overproduction of peripheral blood CD69+ lymphocytes and increased levels of serum cytokines.

Cérbulo-Vázquez A, Figueroa-Damián R, Arriaga-Pizano LA, Hernández-Andrade E, Mancilla-Herrera I, Flores-Mejía LA, Arteaga-Troncoso G, López-Macías C, Isibasi A, Mancilla-Ramírez J. Cérbulo-Vázquez A, et al. PLoS One. 2014 Sep 25;9(9):e107900. doi: 10.1371/journal.pone.0107900. eCollection 2014. PLoS One. 2014. PMID: 25254368 Free PMC article.

142

Evolution of an influenza pandemic in 13 countries from 5 continents monitored by protein microarray from neonatal screening bloodspots.

de Bruin E, Loeber JG, Meijer A, Castillo GM, Cepeda ML, Torres-Sepúlveda MR, Borrajo GJ, Caggana M, Giguere Y, Meyer M, Fukushi M, Devi AR, Khneisser I, Vilarinho L, von Döbeln U, Torresani T, Mackenzie J, Zutt I, Schipper M, Elvers LH, Koopmans MP. de Bruin E, et al. J Clin Virol. 2014 Sep;61(1):74-80. doi: 10.1016/j.jcv.2014.06.020. Epub 2014 Jun 30. J Clin Virol. 2014. PMID: 25017954 Free article.

143

Prospective cohort study of the safety of an influenza A(H1N1) vaccine in pregnant Chinese women.

Ma F, Zhang L, Jiang R, Zhang J, Wang H, Gao X, Li X, Liu Y. Ma F, et al. Clin Vaccine Immunol. 2014 Sep;21(9):1282-7. doi: 10.1128/CVI.00375-14. Epub 2014 Jul 2. Clin Vaccine Immunol. 2014. PMID: 24990911 Free PMC article.

144

CDC Pregnancy Flu Line: monitoring severe illness among pregnant women with influenza.

Ailes EC, Newsome K, Williams JL, McIntyre AF, Jamieson DJ, Finelli L, Honein MA. Ailes EC, et al. Matern Child Health J. 2014 Sep;18(7):1578-82. doi: 10.1007/s10995-013-1415-6. Matern Child Health J. 2014. PMID: 24368408 Free PMC article.

145

A single immunization with inactivated H1N1 influenza vaccine formulated with delta inulin adjuvant (Advax™) overcomes pregnancy-associated immune suppression and enhances passive neonatal protection.

Honda-Okubo Y, Kolpe A, Li L, Petrovsky N. Honda-Okubo Y, et al. Vaccine. 2014 Aug 6;32(36):4651-9. doi: 10.1016/j.vaccine.2014.06.057. Epub 2014 Jun 21. Vaccine. 2014. PMID: 24958701 Free PMC article.

146

Predictors of fatality in pandemic influenza A (H1N1) virus infection among adults.

Ergönül Ö, Alan S, Ak Ö, Sargın F, Kantürk A, Gündüz A, Engin D, Öncül O, Balkan II, Ceylan B, Benzonana N, Yazıcı S, Şimşek F, Uzun N, Inan A, Gulhan E, Ciblak M, Midilli K, Ozyurt M, Badur S, Gencer S, Nazlıcan O, Özer S, Özgüneş N, Yıldırmak T, Aslan T, Göktaş P, Saltoğlu N, Fincancı M, Dokucu AI, Eraksoy H; Turkish Society of Clinical Microbiology and Infectious Diseases (KLIMIK); Pandemic Influenza Study Group. Ergönül Ö, et al. BMC Infect Dis. 2014 Jun 10;14:317. doi: 10.1186/1471-2334-14-317. BMC Infect Dis. 2014. PMID: 24916566 Free PMC article.

147

General influenza infection control policies and practices during the 2009 H1N1 influenza pandemic: a survey of women's health, obstetric, and neonatal nurses.

Ruch-Ross HS, Zapata LB, Williams JL, Ruhl C. Ruch-Ross HS, et al. Am J Infect Control. 2014 Jun;42(6):e65-70. doi: 10.1016/j.ajic.2014.02.022. Am J Infect Control. 2014. PMID: 24837128 Free PMC article.

148

Evaluation of safety of A/H1N1 pandemic vaccination during pregnancy: cohort study.

Trotta F, Da Cas R, Spila Alegiani S, Gramegna M, Venegoni M, Zocchetti C, Traversa G. Trotta F, et al. BMJ. 2014 May 29;348:g3361. doi: 10.1136/bmj.g3361. BMJ. 2014. PMID: 24874845 Free PMC article.

149

2009 H1N1 and seasonal influenza immunization among pregnant women: a comparison of different sources of immunization information.

Specker B, Wey B, Fuller J, Sandoval MN, Durkin M, Dole N, Walter EB Jr. Specker B, et al. Matern Child Health J. 2014 Apr;18(3):681-7. doi: 10.1007/s10995-013-1293-y. Matern Child Health J. 2014. PMID: 23793534 Free PMC article.

150

Polymorphisms at residue 222 of the hemagglutinin of pandemic influenza A(H1N1)pdm09: association of quasi-species to morbidity and mortality in different risk categories.

Resende PC, Motta FC, Oliveira Mde L, Gregianini TS, Fernandes SB, Cury AL, do Carmo D Rosa M, Souza TM, Siqueira MM. Resende PC, et al. PLoS One. 2014 Mar 25;9(3):e92789. doi: 10.1371/journal.pone.0092789. eCollection 2014. PLoS One. 2014. PMID: 24667815 Free PMC article.

151

Time-dependent propensity score for assessing the effect of vaccine exposure on pregnancy outcomes through pregnancy exposure cohort studies.

Xu R, Luo Y, Glynn R, Johnson D, Jones KL, Chambers C. Xu R, et al. Int J Environ Res Public Health. 2014 Mar 12;11(3):3074-85. doi: 10.3390/ijerph110303074. Int J Environ Res Public Health. 2014. PMID: 24625623 Free PMC article.

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Use of an oscillatory PEP device to enhance bronchial hygiene in a patient of post-H1NI pneumonia and acute respiratory distress syndrome with pneumothorax.

Narula D, Nangia V. Narula D, et al. BMJ Case Rep. 2014 Mar 7;2014:bcr2013202598. doi: 10.1136/bcr-2013-202598. BMJ Case Rep. 2014. PMID: 24717858 Free PMC article.

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Rates and determinants of seasonal influenza vaccination in pregnancy and association with neonatal outcomes.

Legge A, Dodds L, MacDonald NE, Scott J, McNeil S. Legge A, et al. CMAJ. 2014 Mar 4;186(4):E157-64. doi: 10.1503/cmaj.130499. Epub 2014 Jan 6. CMAJ. 2014. PMID: 24396098 Free PMC article.

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Clinical profile & outcome of H1N1 infected pregnant women in a tertiary care teaching hospital of northern India.

Singhal S, Sarda N, Arora R, Punia N, Jain A. Singhal S, et al. Indian J Med Res. 2014 Mar;139(3):454-8. Indian J Med Res. 2014. PMID: 24820841 Free PMC article.

155

Update: influenza activity - United States, September 29, 2013-February 8, 2014.

Arriola CS, Brammer L, Epperson S, Blanton L, Kniss K, Mustaquim D, Steffens C, Dhara R, Leon M, Perez A, Chaves SS, Katz J, Wallis T, Villanueva J, Xu X, Abd Elal AI, Gubareva L, Cox N, Finelli L, Bresee J, Jhung M; Centers for Disease Control and Prevention (CDC). Arriola CS, et al. MMWR Morb Mortal Wkly Rep. 2014 Feb 21;63(7):148-54. MMWR Morb Mortal Wkly Rep. 2014. PMID: 24553198 Free PMC article.

156

Impact on pregnancies in south Brazil from the influenza A (H1N1) pandemic: cohort study.

da Silva AA, Ranieri TM, Torres FD, Vianna FS, Paniz GR, Sanseverino PB, Picon PD, de Azevedo PB, Costa MH, Schuler-Faccini L, Sanseverino MT. da Silva AA, et al. PLoS One. 2014 Feb 18;9(2):e88624. doi: 10.1371/journal.pone.0088624. eCollection 2014. PLoS One. 2014. PMID: 24558404 Free PMC article.

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Peripartum outcomes: non-adjuvanted v. adjuvanted H1N1 vaccination.

Ray JG, McGeer AJ, Blake JM, Lebovic G, Smith GN, Yudin MH. Ray JG, et al. CMAJ. 2014 Feb 4;186(2):137. doi: 10.1503/cmaj.114-0006. CMAJ. 2014. PMID: 24492526 Free PMC article. No abstract available.

158

Maintaining the momentum: key factors influencing acceptance of influenza vaccination among pregnant women following the H1N1 pandemic.

Halperin BA, MacKinnon-Cameron D, McNeil S, Kalil J, Halperin SA. Halperin BA, et al. Hum Vaccin Immunother. 2014;10(12):3629-41. doi: 10.4161/21645515.2014.980684. Hum Vaccin Immunother. 2014. PMID: 25668670 Free PMC article.

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Pandemic influenza A (H1N1) infection in pregnant and nonpregnant women in Spain (2009-2010).

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High rate of chronic villitis in placentas of pregnancies complicated by influenza A/H1N1 infection.

Meijer WJ, Wensing AM, Bruinse HW, Nikkels PG. Meijer WJ, et al. Infect Dis Obstet Gynecol. 2014;2014:768380. doi: 10.1155/2014/768380. Epub 2014 Feb 16. Infect Dis Obstet Gynecol. 2014. PMID: 24693211 Free PMC article.

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Seczyńska B, Jankowski M, Nowak I, Szczeklik W, Szułdrzyński K, Królikowski W. Seczyńska B, et al. Pol Arch Med Wewn. 2014;124(3):136-7. doi: 10.20452/pamw.2140. Epub 2014 Jan 24. Pol Arch Med Wewn. 2014. PMID: 24643021 Free article. No abstract available.

162

Risk factors associated with fatal influenza, Romania, October 2009-May 2011.

Zolotusca L, Jorgensen P, Popovici O, Pistol A, Popovici F, Widdowson MA, Alexandrescu V, Ivanciuc A, Cheng PY, Gross D, Brown CS, Mott JA. Zolotusca L, et al. Influenza Other Respir Viruses. 2014 Jan;8(1):8-12. doi: 10.1111/irv.12209. Epub 2013 Nov 20. Influenza Other Respir Viruses. 2014. PMID: 24251915 Free PMC article.

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Update: influenza activity - United States, September 29-December 7, 2013.

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Seasonal influenza vaccination coverage among women who delivered a live-born infant - 21 states and New York City, 2009-10 and 2010-11 influenza seasons.

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Serological response of patients with influenza A (H1N1) pdm09-associated pneumonia: an observational study.

Angkasekwinai N, Kaewnapha B, Waywa D, Werarak P, Tongsai S, Chokephaibulkit K, Thamlikitkul V, Siritantikorn S. Angkasekwinai N, et al. PLoS One. 2013 Nov 27;8(11):e81436. doi: 10.1371/journal.pone.0081436. eCollection 2013. PLoS One. 2013. PMID: 24312299 Free PMC article.

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Influenza vaccination among pregnant women--Massachusetts, 2009-2010.

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Epidemiology and outcomes of adults with asthma who were hospitalized or died with 2009 pandemic influenza A (H1N1)--California, 2009.

Mortensen E, Louie J, Pertowski C, Cadwell BL, Weiss E, Acosta M, Matyas BT. Mortensen E, et al. Influenza Other Respir Viruses. 2013 Nov;7(6):1343-9. doi: 10.1111/irv.12120. Epub 2013 Jul 15. Influenza Other Respir Viruses. 2013. PMID: 23848363 Free PMC article.

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[Influenza infection and pregnancy].

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Maternal and neonatal outcomes among pregnant women with 2009 pandemic influenza A(H1N1) illness in Florida, 2009-2010: a population-based cohort study.

Doyle TJ, Goodin K, Hamilton JJ. Doyle TJ, et al. PLoS One. 2013 Oct 24;8(10):e79040. doi: 10.1371/journal.pone.0079040. eCollection 2013. PLoS One. 2013. PMID: 24205364 Free PMC article.

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The H1N1 influenza pandemic: need for solutions to ethical problems.

Bhatia P. Bhatia P. Indian J Med Ethics. 2013 Oct-Dec;10(4):259-63. doi: 10.20529/IJME.2013.079. Indian J Med Ethics. 2013. PMID: 24152353 Free article.

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Seroprevalence of influenza A H1N1 and seroconversion of mothers and infants induced by a single dose of monovalent vaccine.

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Influenza infection control practices in labor and delivery units during the 2009 H1N1 influenza pandemic.

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Obstetricians and the 2009-2010 H1N1 vaccination effort: implications for future pandemics.

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Populations at risk for severe or complicated influenza illness: systematic review and meta-analysis.

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The expected number of background disease events during mass immunization in China.

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IgA and neutralizing antibodies to influenza a virus in human milk: a randomized trial of antenatal influenza immunization.

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Postpartum and neonatal nursing care during the 2009 H1N1 influenza pandemic.

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Serum proinflammatory cytokine responses to influenza virus vaccine among women during pregnancy versus non-pregnancy.

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The clinical course of late diagnosed fatal cases of A (H1N1) influenza in Poland.

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The safety and immunogenicity of trivalent inactivated influenza vaccination: a study of maternal-cord blood pairs in Taiwan.

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[Reasons why pregnant women did not vaccinate against influenza A H1N1].

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Safety and immunogenicity of 2009 pH1N1 vaccination in HIV-infected pregnant women.

Abzug MJ, Nachman SA, Muresan P, Handelsman E, Watts DH, Fenton T, Heckman B, Petzold E, Weinberg A, Levin MJ; International Maternal Pediatric Adolescent AIDS Clinical Trials Group P1086 Protocol Team. Abzug MJ, et al. Clin Infect Dis. 2013 May;56(10):1488-97. doi: 10.1093/cid/cit057. Epub 2013 Feb 1. Clin Infect Dis. 2013. PMID: 23378284 Free PMC article. Clinical Trial.

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Neonatal outcomes after antenatal influenza immunization during the 2009 H1N1 influenza pandemic: impact on preterm birth, birth weight, and small for gestational age birth.

Richards JL, Hansen C, Bredfeldt C, Bednarczyk RA, Steinhoff MC, Adjaye-Gbewonyo D, Ault K, Gallagher M, Orenstein W, Davis RL, Omer SB. Richards JL, et al. Clin Infect Dis. 2013 May;56(9):1216-22. doi: 10.1093/cid/cit045. Epub 2013 Feb 1. Clin Infect Dis. 2013. PMID: 23378281 Free PMC article.

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Comparison of VAERS fetal-loss reports during three consecutive influenza seasons: was there a synergistic fetal toxicity associated with the two-vaccine 2009/2010 season?

Goldman GS. Goldman GS. Hum Exp Toxicol. 2013 May;32(5):464-75. doi: 10.1177/0960327112455067. Epub 2012 Sep 27. Hum Exp Toxicol. 2013. PMID: 23023030 Free PMC article.

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Altered response to A(H1N1)pnd09 vaccination in pregnant women: a single blinded randomized controlled trial.

Bischoff AL, Følsgaard NV, Carson CG, Stokholm J, Pedersen L, Holmberg M, Bisgaard A, Birch S, Tsai TF, Bisgaard H. Bischoff AL, et al. PLoS One. 2013 Apr 18;8(4):e56700. doi: 10.1371/journal.pone.0056700. Print 2013. PLoS One. 2013. PMID: 23637733 Free PMC article. Clinical Trial.

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Pandemic H1N1 in Canada and the use of evidence in developing public health policies--a policy analysis.

Rosella LC, Wilson K, Crowcroft NS, Chu A, Upshur R, Willison D, Deeks SL, Schwartz B, Tustin J, Sider D, Goel V. Rosella LC, et al. Soc Sci Med. 2013 Apr;83:1-9. doi: 10.1016/j.socscimed.2013.02.009. Epub 2013 Feb 13. Soc Sci Med. 2013. PMID: 23465198 Free PMC article.

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Pandemic influenza vaccination during pregnancy: an investigation of vaccine uptake during the 2009/10 pandemic vaccination campaign in Great Britain.

Sammon CJ, McGrogan A, Snowball J, de Vries CS. Sammon CJ, et al. Hum Vaccin Immunother. 2013 Apr;9(4):917-23. doi: 10.4161/hv.23277. Epub 2013 Jan 30. Hum Vaccin Immunother. 2013. PMID: 23364304 Free PMC article.

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Influenza A/H1N1 MF59 adjuvanted vaccine in pregnant women and adverse perinatal outcomes: multicentre study.

Rubinstein F, Micone P, Bonotti A, Wainer V, Schwarcz A, Augustovski F, Pichon Riviere A, Karolinski A; EVA Study Research Group Estudio Embarazo y Vacuna Antigripal. Rubinstein F, et al. BMJ. 2013 Feb 4;346:f393. doi: 10.1136/bmj.f393. BMJ. 2013. PMID: 23381200 Free PMC article.

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Clinical features, treatments and outcomes of influenza A (H1N1) 2009 among the hospitalized patients in the clinic for infectious diseases in Novi Sad.

Canak G, Kovacević N, Vukadinov J, Turkulov V, Sević S, Doder R, Somborac S, Potkonjak A. Canak G, et al. Vojnosanit Pregl. 2013 Feb;70(2):155-62. doi: 10.2298/vsp1302155c. Vojnosanit Pregl. 2013. PMID: 23607182 Free article.

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Risk of fetal death after pandemic influenza virus infection or vaccination.

Håberg SE, Trogstad L, Gunnes N, Wilcox AJ, Gjessing HK, Samuelsen SO, Skrondal A, Cappelen I, Engeland A, Aavitsland P, Madsen S, Buajordet I, Furu K, Nafstad P, Vollset SE, Feiring B, Nøkleby H, Magnus P, Stoltenberg C. Håberg SE, et al. N Engl J Med. 2013 Jan 24;368(4):333-40. doi: 10.1056/NEJMoa1207210. Epub 2013 Jan 16. N Engl J Med. 2013. PMID: 23323868 Free PMC article.

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Comparing the immunogenicity of AS03-adjuvanted 2009 pandemic H1N1 vaccine with clinical protection in priority risk groups in England.

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Multi-centre observational study of transplacental transmission of influenza antibodies following vaccination with AS03(A)-adjuvanted H1N1 2009 vaccine.

Puleston R, Bugg G, Hoschler K, Konje J, Thornton J, Stephenson I, Myles P, Enstone J, Augustine G, Davis Y, Zambon M, Nicholson K, Nguyen-Van-Tam J. Puleston R, et al. PLoS One. 2013;8(1):e47448. doi: 10.1371/journal.pone.0047448. Epub 2013 Jan 23. PLoS One. 2013. PMID: 23372640 Free PMC article.

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Seroepidemiologic effects of influenza A(H1N1)pdm09 in Australia, New Zealand, and Singapore.

Trauer JM, Bandaranayake D, Booy R, Chen MI, Cretikos M, Dowse GK, Dwyer DE, Greenberg ME, Huang QS, Khandaker G, Kok J, Laurie KL, Lee VJ, McVernon J, Walter S, Markey PG; Australia, New Zealand and Singapore Pandemic Serosurveillance Study Group. Trauer JM, et al. Emerg Infect Dis. 2013 Jan;19(1):92-101. doi: 10.3201/eid1901.111643. Emerg Infect Dis. 2013. PMID: 23260059 Free PMC article.

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Hospitalization of influenza-like illness patients recommended by general practitioners in France between 1997 and 2010.

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Determinants of 2009 A/H1N1 influenza vaccination among pregnant women in Hong Kong.

Tarrant M, Wu KM, Yuen CY, Cheung KL, Chan VH. Tarrant M, et al. Matern Child Health J. 2013 Jan;17(1):23-32. doi: 10.1007/s10995-011-0943-1. Matern Child Health J. 2013. PMID: 22297574 Free PMC article.

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Evaluating the hazard of foetal death following H1N1 influenza vaccination; a population based cohort study in the UK GPRD.

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2009 Pandemic influenza A virus subtype H1N1 in Morocco, 2009-2010: epidemiology, transmissibility, and factors associated with fatal cases.

Barakat A, Ihazmad H, El Falaki F, Tempia S, Cherkaoui I, El Aouad R. Barakat A, et al. J Infect Dis. 2012 Dec 15;206 Suppl 1(Suppl 1):S94-100. doi: 10.1093/infdis/jis547. J Infect Dis. 2012. PMID: 23169979 Free PMC article.

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[Morbidity and mortality associated to influenza A (H1N1) 2009 admissions in two hospitals of the Metropolitan area and analysis of its economic impact].

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Pandemic influenza A (H1N1) 2009 in Madrid, Spain: incidence and characteristics in immigrant and native population.

Esteban-Vasallo MD, Domínguez-Berjón MF, Aerny-Perreten N, Astray-Mochales J, Martín-Martínez F, Gènova-Maleras R. Esteban-Vasallo MD, et al. Eur J Public Health. 2012 Dec;22(6):792-6. doi: 10.1093/eurpub/ckr171. Epub 2011 Dec 8. Eur J Public Health. 2012. PMID: 22158997 Free article.

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Neighborhood determinants of 2009 pandemic A/H1N1 influenza vaccination in Montreal, Quebec, Canada.

Brien S, Kwong JC, Charland KM, Verma AD, Brownstein JS, Buckeridge DL. Brien S, et al. Am J Epidemiol. 2012 Nov 15;176(10):897-908. doi: 10.1093/aje/kws154. Epub 2012 Oct 16. Am J Epidemiol. 2012. PMID: 23077284 Free PMC article.

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