Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page


My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2011 1
2012 1
2013 2
2015 2
2016 2
2017 1
2018 2
2019 1
2020 3
2021 2
2022 5
2023 2

Text availability

Article attribute

Article type

Publication date

Search Results

21 results

Results by year

Filters applied: . Clear all
Page 1
Clinical metagenomics in a resource-limited setting.
Marais G, Valley-Omar Z, Marais S, McMullen K, Bateman K, der Westhuizen DV, Maseko M, Hardie D, Brink A. Marais G, et al. Among authors: valley omar z. J Infect. 2023 Dec;87(6):604-606. doi: 10.1016/j.jinf.2023.10.007. Epub 2023 Oct 17. J Infect. 2023. PMID: 37852478 No abstract available.
Escape from recognition of SARS-CoV-2 variant spike epitopes but overall preservation of T cell immunity.
Riou C, Keeton R, Moyo-Gwete T, Hermanus T, Kgagudi P, Baguma R, Valley-Omar Z, Smith M, Tegally H, Doolabh D, Iranzadeh A, Tyers L, Mutavhatsindi H, Tincho MB, Benede N, Marais G, Chinhoyi LR, Mennen M, Skelem S, du Bruyn E, Stek C; South African cellular immunity network; de Oliveira T, Williamson C, Moore PL, Wilkinson RJ, Ntusi NAB, Burgers WA. Riou C, et al. Among authors: valley omar z. Sci Transl Med. 2022 Feb 9;14(631):eabj6824. doi: 10.1126/scitranslmed.abj6824. Epub 2022 Feb 9. Sci Transl Med. 2022. PMID: 34931886 Free PMC article.
Reduced amplification efficiency of the RNA-dependent-RNA-polymerase target enables tracking of the Delta SARS-CoV-2 variant using routine diagnostic tests.
Valley-Omar Z, Marais G, Iranzadeh A, Naidoo M, Korsman S, Maponga T, Hussey H, Davies MA, Boulle A, Doolabh D, Laubscher M, Wojno J, Deetlefs JD, Maritz J, Scott L, Msomi N, Naicker C, Tegally H, de Oliveira T, Bhiman J, Williamson C, Preiser W, Hardie D, Hsiao NY. Valley-Omar Z, et al. J Virol Methods. 2022 Apr;302:114471. doi: 10.1016/j.jviromet.2022.114471. Epub 2022 Jan 18. J Virol Methods. 2022. PMID: 35051442 Free PMC article.
Human respiratory syncytial virus diversity and epidemiology among patients hospitalized with severe respiratory illness in South Africa, 2012-2015.
Valley-Omar Z, Tempia S, Hellferscee O, Walaza S, Variava E, Dawood H, Kahn K, McMorrow M, Pretorius M, Mtshali S, Mamorobela E, Wolter N, Venter M, von Gottberg A, Cohen C, Treurnicht FK. Valley-Omar Z, et al. Influenza Other Respir Viruses. 2022 Mar;16(2):222-235. doi: 10.1111/irv.12905. Epub 2021 Sep 16. Influenza Other Respir Viruses. 2022. PMID: 34528769 Free PMC article.
Household Transmission of Seasonal Influenza From HIV-Infected and HIV-Uninfected Individuals in South Africa, 2013-2014.
Cohen C, Tshangela A, Valley-Omar Z, Iyengar P, Von Mollendorf C, Walaza S, Hellferscee O, Venter M, Martinson N, Mahlase G, McMorrow M, Cowling BJ, Treurnicht FK, Cohen AL, Tempia S. Cohen C, et al. Among authors: valley omar z. J Infect Dis. 2019 Apr 19;219(10):1605-1615. doi: 10.1093/infdis/jiy702. J Infect Dis. 2019. PMID: 30541140 Free PMC article.
Human Parainfluenza Virus (HPIV) Detection in Hospitalized Children with Acute Respiratory Tract Infection in the Western Cape, South Africa during 2014-2022 Reveals a Shift in Dominance of HPIV 3 and 4 Infections.
Parsons J, Korsman S, Smuts H, Hsiao NY, Valley-Omar Z, Gelderbloem T, Hardie D. Parsons J, et al. Among authors: valley omar z. Diagnostics (Basel). 2023 Aug 2;13(15):2576. doi: 10.3390/diagnostics13152576. Diagnostics (Basel). 2023. PMID: 37568938 Free PMC article.
Assessing the clinical severity of the Omicron variant in the Western Cape Province, South Africa, using the diagnostic PCR proxy marker of RdRp target delay to distinguish between Omicron and Delta infections - a survival analysis.
Hussey H, Davies MA, Heekes A, Williamson C, Valley-Omar Z, Hardie D, Korsman S, Doolabh D, Preiser W, Maponga T, Iranzadeh A, Wasserman S, Boloko L, Symons G, Raubenheimer P, Parker A, Schrueder N, Solomon W, Rousseau P, Wolter N, Jassat W, Cohen C, Lessells R, Wilkinson RJ, Boulle A, Hsiao NY. Hussey H, et al. Among authors: valley omar z. Int J Infect Dis. 2022 May;118:150-154. doi: 10.1016/j.ijid.2022.02.051. Epub 2022 Feb 27. Int J Infect Dis. 2022. PMID: 35235826 Free PMC article.
21 results