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Amblyomma hebraeum is the predominant tick species on goats in the Mnisi Community Area of Mpumalanga Province South Africa and is co-infected with Ehrlichia ruminantium and Rickettsia africae.
Jongejan F, Berger L, Busser S, Deetman I, Jochems M, Leenders T, de Sitter B, van der Steen F, Wentzel J, Stoltsz H. Jongejan F, et al. Parasit Vectors. 2020 Apr 21;13(1):172. doi: 10.1186/s13071-020-04059-5. Parasit Vectors. 2020. PMID: 32312285 Free PMC article.
BACKGROUND: In sub-Saharan Africa, Amblyomma ticks are vectors of heartwater disease in domestic ruminants, caused by the rickettsial pathogen Ehrlichia ruminantium. ...A selected number of A. hebraeum nymphs and adult ticks was tested for co-infection …
BACKGROUND: In sub-Saharan Africa, Amblyomma ticks are vectors of heartwater disease in domestic ruminants, caused by the rickettsial …
The relationship between tick (Amblyomma hebraeum) infestation and immunity to heartwater (Cowdria ruminantium infection) in calves in Zimbabwe.
Norval RA, Donachie PL, Meltzer MI, Deem SL, Mahan SM. Norval RA, et al. Vet Parasitol. 1995 Jul;58(4):335-52. doi: 10.1016/0304-4017(94)00733-s. Vet Parasitol. 1995. PMID: 8533273
We conducted a study in a heartwater-endemic area in southeastern Zimbabwe to investigate the relationships between calf immunity to C. ruminatium, infestations of the tick vector Amblyomma hebraeum and dam, colostral and calf antibody titres to C. ruminantium
We conducted a study in a heartwater-endemic area in southeastern Zimbabwe to investigate the relationships between calf immunity to C. rumi …
Laboratory reared Amblyomma hebraeum and Amblyomma variegatum ticks differ in their susceptibility to infection with Cowdria ruminantium.
Mahan SM, Peter TF, Semu SM, Simbi BH, Norval RA, Barbet AF. Mahan SM, et al. Epidemiol Infect. 1995 Oct;115(2):345-53. doi: 10.1017/s0950268800058465. Epidemiol Infect. 1995. PMID: 7589273 Free PMC article.
The susceptibility of laboratory reared Zimbabwean Amblyomma hebraeum and A. variegatum ticks to infection with geographically distinct Cowdria ruminantium strains was investigated by feeding both species simultaneously on individual sheep infected with one o …
The susceptibility of laboratory reared Zimbabwean Amblyomma hebraeum and A. variegatum ticks to infection with geographically …
Genetic diversity of Ehrlichia ruminantium field strains from selected farms in South Africa.
Steyn HC, Pretorius A. Steyn HC, et al. Onderstepoort J Vet Res. 2020 Jun 25;87(1):e1-e12. doi: 10.4102/ojvr.v87i1.1741. Onderstepoort J Vet Res. 2020. PMID: 32633993 Free PMC article.
Heartwater is a tick-borne disease caused by the intracellular rickettsial parasite Ehrlichia ruminantium and transmitted by Amblyomma hebraeum ticks. ...The conserved E. ruminantium pCS20 quantitative polymerase chain reaction (qPCR) assay was …
Heartwater is a tick-borne disease caused by the intracellular rickettsial parasite Ehrlichia ruminantium and transmitted by …
Climate changes and suitability for the ticks Amblyomma hebraeum and Amblyomma variegatum (Ixodidae) in Zimbabwe (1974-1999).
Estrada-Peña A, Horak IG, Petney T. Estrada-Peña A, et al. Vet Parasitol. 2008 Feb 14;151(2-4):256-67. doi: 10.1016/j.vetpar.2007.11.014. Epub 2007 Nov 17. Vet Parasitol. 2008. PMID: 18083309
The spread of Amblyomma hebraeum has been reported in Zimbabwe. At the same time there was little or no spread in the distribution of Amblyomma variegatum. ...Without adequate control measures, invasive waves of A. hebraeum may occur over a background …
The spread of Amblyomma hebraeum has been reported in Zimbabwe. At the same time there was little or no spread in the distribu …
Prevalence of serum antibodies of tick-borne diseases and the presence of Rhipicephalus microplus in communal grazing cattle in the north-eastern region of the Eastern Cape Province of South Africa.
Yawa M, Nyangiwe N, Jaja IF, Kadzere CT, Marufu MC. Yawa M, et al. Parasitol Res. 2021 Apr;120(4):1183-1191. doi: 10.1007/s00436-020-07024-4. Epub 2021 Jan 6. Parasitol Res. 2021. PMID: 33409632
A standard indirect fluorescent antibody test (IFAT) was used to determine antibodies to Babesia bigemina, Babesia bovis, and Ehrlichia ruminantium and indirect enzyme-linked immunosorbent assay (ELISA) was employed for antibodies to Anaplasma marginale detection. . …
A standard indirect fluorescent antibody test (IFAT) was used to determine antibodies to Babesia bigemina, Babesia bovis, and Ehrlichia
Comparison of efficacy of American and African Amblyomma ticks as vectors of heartwater (Cowdria ruminantium) infection by molecular analyses and transmission trials.
Mahan SM, Peter TF, Simbi BH, Kocan K, Camus E, Barbet AF, Burridge MJ. Mahan SM, et al. J Parasitol. 2000 Feb;86(1):44-9. doi: 10.1645/0022-3395(2000)086[0044:COEOAA]2.0.CO;2. J Parasitol. 2000. PMID: 10701562
The ability of Amblyomma americanum, Amblyomma cajennense, Amblyomma maculatum, and Amblyomma variegatum to acquire and transmit Cowdria ruminantium infection was investigated. ...Amblyomma americanum and A. cajennense failed to transmit …
The ability of Amblyomma americanum, Amblyomma cajennense, Amblyomma maculatum, and Amblyomma variegatum to acqu …
Distributions of the vectors of heartwater, Amblyomma hebraeum and Amblyomma variegatum (Acari: Ixodidae), in Zimbabwe.
Peter TF, Perry BD, O'Callaghan CJ, Medley GF, Shumba W, Madzima W, Burridge MJ, Mahan SM. Peter TF, et al. Exp Appl Acarol. 1998 Dec;22(12):725-40. doi: 10.1023/a:1006045508522. Exp Appl Acarol. 1998. PMID: 10030008
The tick vectors of heartwater (Cowdria ruminantium infection) in Zimbabwe, Amblyomma hebraeum and Amblyomma variegatum, historically were believed to be confined to the low-lying regions of the south and north-west of the country. ...To determine the …
The tick vectors of heartwater (Cowdria ruminantium infection) in Zimbabwe, Amblyomma hebraeum and Amblyomma var …
A quantitative real-time PCR assay for Ehrlichia ruminantium using pCS20.
Steyn HC, Pretorius A, McCrindle CM, Steinmann CM, Van Kleef M. Steyn HC, et al. Vet Microbiol. 2008 Oct 15;131(3-4):258-65. doi: 10.1016/j.vetmic.2008.04.002. Epub 2008 Jun 3. Vet Microbiol. 2008. PMID: 18511221
Heartwater is a tick borne disease that affects ruminants and wild animals in Africa south of the Sahara. It is caused by Ehrlichia ruminantium and transmitted by the tick Amblyomma hebraeum. ...The genome of the heartwater agent Ehrlichia ru
Heartwater is a tick borne disease that affects ruminants and wild animals in Africa south of the Sahara. It is caused by Ehrlichia
Genetic characterization of tick-borne pathogens in ticks infesting cattle and sheep from three South African provinces.
Guo H, Adjou Moumouni PF, Thekisoe O, Gao Y, Liu M, Li J, Galon EM, Efstratiou A, Wang G, Jirapattharasate C, Ringo AE, Mtshali K, Inoue N, Suzuki H, Xuan X. Guo H, et al. Ticks Tick Borne Dis. 2019 Jun;10(4):875-882. doi: 10.1016/j.ttbdis.2019.04.008. Epub 2019 Apr 15. Ticks Tick Borne Dis. 2019. PMID: 31010732
Furthermore, presence of Babesia spp., Theileria spp., Anaplasma marginale, Rickettsia spp., Ehrlichia ruminantium and Coxiella burnetii was detected from tick DNA using species-specific PCR or nested PCRs. ...Infected ticks were identified as Rhipicephalus evertsi …
Furthermore, presence of Babesia spp., Theileria spp., Anaplasma marginale, Rickettsia spp., Ehrlichia ruminantium and Coxiell …
35 results