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首页> 美国卫生研究院文献>The Onderstepoort Journal of Veterinary Research >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
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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

机译：津巴布韦Gonarezhou国家公园牲畜/野生动物交界处的牛和某些野生动植物物种裂谷热的血清流行率和相关危险因素

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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 < 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 ( > 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 ( = 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 ( < 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.
机译：进行了一项研究，以调查津巴布韦大林波波过境保护区外围选定交界处的牛和某些选定野生动植物物种的裂谷热（RVF）感染的血清阳性率及其相关危险因素。根据牲畜与野生生物的界面类型选择了三个研究地点：多孔牲畜与野生动物的界面（无限制）；非多孔的牲畜-野生动物界面（受围栏限制）和牲畜-野生动物非界面（完全没有接触或控制）。从年龄≥2岁的牛身上收集血清，分别代表雌性和完整雄性。还从Gonarezhou国家公园的Mabalauta（多孔界面）和Chipinda Pools（非界面）区域的选定野生有蹄类动物中收集了血清。使用竞争性酶联免疫吸附测定（ELISA）测试来测试血清中的裂谷热病毒（RVFV）抗体。 AX2测试用于评估类别之间的差异，并且<0.05被认为是显着的。在牛中，总体血清阳性率为1.7％（17/1011）（95％置信区间[CI]：1.01-2.7）。多孔界面记录的血清阳性率为2.3％（95％CI：1.2–4.3），非多孔界面记录的血清阳性率为1.8％（95％CI：0.7–4.3），非界面区域记录的血清阳性率为0.4 ％（955 CI：0.02–2.5），但根据部位的血清阳性率差异不显着（> 0.05）。所有黑斑羚和苦瓜样品均为阴性。水牛的总体血清阳性率是11.7％（95％CI：6.6-19.5），两个位点之间没有显着差异（= 0.38）（Mabalauta，4.4％[95％CI：0.2-24]与Chipinda，13.6） ％[95％CI：7.6–23]）。水牛的总体血清阳性率（11.7％，13/111）显着（<0.0001）比牛（1.7％，17/1011）高。结果确定了牛和某些野生动植物中存在RVFV，水牛种群中可能存在西氏菌感染。需要进一步的研究以调查该病毒是否在牛和野生动植物之间传播。

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