Seroprevalence and associated risk factors of Rift Valley fever in cattle and selected wildlife species at the livestock/wildlife interface areas of Gonarezhou National Park, Zimbabwe

Onderstepoort Journal of Veterinary Research


 
 
Field Value
 
Title Seroprevalence and associated risk factors of Rift Valley fever in cattle and selected wildlife species at the livestock/wildlife interface areas of Gonarezhou National Park, Zimbabwe
 
Creator Ndengu, Masimba Matope, Gift Tivapasi, Musavengana Pfukenyi, Davies M. Cetre-Sossah, Catherine de Garine-Wichatitsky, Michel
 
Subject veterinary microbiology Rift Valley fever; abortion; zoonosis; cattle; wildlife
Description A study was conducted to investigate the seroprevalence and associated risk factors of Rift Valley fever (RVF) infection in cattle and some selected wildlife species at selected interface areas at the periphery of the Great Limpopo Transfrontier Conservation Area in Zimbabwe. Three study sites were selected based on the type of livestock–wildlife interface: porous livestock–wildlife interface (unrestricted); non-porous livestock–wildlife interface (restricted by fencing) and livestock–wildlife non-interface (totally absent contact or control). Sera were collected from cattle aged ≥ 2 years representing both female and intact male. Sera were also collected from selected wild ungulates from Mabalauta (porous interface) and Chipinda Pools (non-interface) areas of the Gonarezhou National Park. Sera were tested for antibodies to Rift Valley fever virus (RVFV) using a competitive enzyme-linked immunosorbent assay (ELISA) test. AX2 test was used to assess differences between categories, and p 0.05 was considered as significant. In cattle, the overall seroprevalence was 1.7% (17/1011) (95% confidence interval [CI]: 1.01–2.7). The porous interface recorded a seroprevalence of 2.3% (95% CI: 1.2–4.3), the non-porous interface recorded a prevalence of 1.8% (95% CI: 0.7–4.3) and the non-interface area recorded a seroprevalence of 0.4% (955 CI: 0.02–2.5), but the difference in seroprevalence according to site was not significant (p 0.05). All impala and kudu samples tested negative. The overall seroprevalence in buffaloes was 11.7% (95% CI: 6.6–19.5), and there was no significant (p = 0.38) difference between the sites (Mabalauta, 4.4% [95% CI: 0.2–24] vs. Chipinda, 13.6% [95% CI: 7.6–23]). The overall seroprevalence in buffaloes (11.7%, 13/111) was significantly (p 0.0001) higher than in cattle (1.7%, 17/1011). The results established the presence of RVFV in cattle and selected wildlife and that sylvatic infections may be present in buffalo populations. Further studies are required to investigate if the virus is circulating between cattle and wildlife.
 
Publisher AOSIS
 
Contributor
Date 2020-04-08
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — —
Format text/html application/epub+zip text/xml application/pdf
Identifier 10.4102/ojvr.v87i1.1731
 
Source Onderstepoort Journal of Veterinary Research; Vol 87, No 1 (2020); 7 pages 2219-0635 0030-2465
 
Language eng
 
Relation https://ojvr.org/index.php/ojvr/article/view/1731/2079 https://ojvr.org/index.php/ojvr/article/view/1731/2078 https://ojvr.org/index.php/ojvr/article/view/1731/2080 https://ojvr.org/index.php/ojvr/article/view/1731/2077
 
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Rights Copyright (c) 2020 Masimba Ndengu, Gift Matope, Musavengana Tivapasi, Davies M. Pfukenyi, Catherine Cetre-Sossah, Michel de Garine-Wichatitsky https://creativecommons.org/licenses/by-nd/4.0