Soler-Tovar Diego, Escobar Luis E
Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, United States of America.
Faculty of Agricultural Sciences, Universidad de La Salle, Bogotá, Colombia.
PLoS One. 2025 Jan 13;20(1):e0317214. doi: 10.1371/journal.pone.0317214. eCollection 2025.
Rabies is a zoonotic infectious disease of global distribution that impacts human and animal health. In rural Latin America, rabies negatively impacts food security and the economy due to losses in livestock production. The common vampire bat, Desmodus rotundus, is the main reservoir and transmitter of rabies virus (RABV) to domestic animals in Latin America. Desmodus rotundus RABV is known to impact the cattle industry, from small farmers to large corporations. We assessed the main patterns of rabies in cattle attributed to D. rotundus RABV across Latin America. Epidemiological data on rabies from Latin America were collected from the Pan American Health Organization spanning the 1970-2023 period. Analyses revealed an average of 450 outbreaks annually for the countries where D. rotundus is distributed, with at least 6 animals dying in each outbreak. Brazil, Colombia, Peru, and Mexico were the Latin American countries with the highest number of rabies outbreaks during the study period and are the most affected countries in recent years. Findings suggest a re-emergence of bat-borne rabies in the region with more outbreaks reported in recent years, especially during the 2003-2020 period. Rabies outbreaks in cattle in the 2000-2020 period were significantly more frequent than in previous decades, with an increase in cross-species transmission after 2002. The size of outbreaks, however, was smaller in recent years, involving lower cattle mortality. Peru, El Salvador, and Brazil showed a strong association (R = 0.73, p = 0.01) between rabies incidence in D. rotundus (rates per million humans: 1.61, 0.94, and 1.09, respectively) and rabies outbreaks in cattle (rates per million cattle: 465.85, 351.01, and 48.22, respectively). A sustained, standardized, and widespread monitoring of D. rotundus demography and health could serve to inform an early warning system for the early detection of RABV and other bat-borne pathogens in Latin America. Current data can be used to forecast when, where, and in which intensity RABV outbreaks are more likely to occur in subtropical and tropical Latin America. A decrease in the size of outbreaks could suggest that strategies for epidemic management (e.g., education, early diagnosis, vaccination) have been effective. The increase in the number of outbreaks could suggest that the factors facilitating cross-species transmission could be on the rise.
狂犬病是一种全球分布的人畜共患传染病,影响着人类和动物的健康。在拉丁美洲农村地区,狂犬病由于牲畜生产损失而对粮食安全和经济产生负面影响。普通吸血蝙蝠(Desmodus rotundus)是拉丁美洲狂犬病病毒(RABV)传播到家畜的主要宿主和传播媒介。已知Desmodus rotundus RABV会影响从小农户到大型企业的养牛业。我们评估了拉丁美洲各地由Desmodus rotundus RABV引起的牛狂犬病的主要模式。1970年至2023年期间,来自拉丁美洲的狂犬病流行病学数据收集自泛美卫生组织。分析显示,在Desmodus rotundus分布的国家,每年平均有450起疫情爆发,每次疫情至少有6只动物死亡。巴西、哥伦比亚、秘鲁和墨西哥是研究期间狂犬病疫情爆发数量最多的拉丁美洲国家,也是近年来受影响最严重的国家。研究结果表明,该地区蝙蝠传播的狂犬病再度出现,近年来报告的疫情爆发更多,尤其是在2003年至2020年期间。2000年至2020年期间牛的狂犬病疫情爆发比前几十年明显更频繁,2002年后跨物种传播有所增加。然而,近年来疫情爆发的规模较小,牛的死亡率较低。秘鲁、萨尔瓦多和巴西显示,Desmodus rotundus的狂犬病发病率(每百万人中的发病率分别为1.61、0.94和1.09)与牛的狂犬病疫情爆发(每百万头牛中的发病率分别为465.85、351.01和48.22)之间存在很强的关联(R = 0.73,p = 0.01)。对Desmodus rotundus的种群数量和健康状况进行持续、标准化和广泛的监测,可为拉丁美洲早期发现RABV和其他蝙蝠传播的病原体的预警系统提供信息。当前的数据可用于预测拉丁美洲亚热带和热带地区RABV疫情爆发更可能在何时、何地以及以何种强度发生。疫情爆发规模的减小可能表明疫情管理策略(如教育、早期诊断、疫苗接种)有效。疫情爆发数量的增加可能表明促进跨物种传播的因素可能在增加。