Australian Centre for Disease Preparedness (ACDP), Commonwealth Scientific and Industrial Research Organisation (CSIRO), East Geelong, VIC, Australia.
Transbound Emerg Dis. 2021 Jul;68(4):1850-1867. doi: 10.1111/tbed.13885. Epub 2020 Nov 4.
The current COVID-19 global pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) of probable bat origin, has highlighted the ongoing need for a One Health response to emerging zoonotic disease events. Understanding the human-animal interface and its relevance to disease transmission remains a critical control point for many emerging zoonoses. Determination of the susceptibility of various animal species to infection with SARS-CoV-2 and the role of animals in the epidemiology of the disease will be critical to informing appropriate human and veterinary public health responses to this pandemic. A scoping literature review was conducted to collect, evaluate and present the available research evidence regarding SARS-CoV-2 infections in animals. Experimental studies have successfully demonstrated SARS-CoV-2 infection and transmission in cats, ferrets, hamsters, bats and non-human primates under experimental settings. Dogs appear to have limited susceptibility to SARS-CoV-2, while other domestic species including pigs and poultry do not appear susceptible. Naturally occurring SARS-CoV-2 infections in animals appear uncommon, with 14 pets, 8 captive big cats and an unreported number of farmed mink testing positive at the time of writing (early July 2020). Infections typically appear asymptomatic in dogs, while clinical signs of respiratory and/or gastrointestinal disease tend to be mild to moderate in felines, and severe to fatal in mink. Most animals are presumed to have been infected by close contact with COVID-19 patients. In domestic settings, viral transmission is self-limiting; however in high-density animal environments, there can be sustained between-animal transmission. To date, two potential cases of animal-to-human transmission are being investigated, on infected mink farms. Given the millions of COVID-19 cases worldwide and ongoing potential for further zoonotic and anthroponotic viral transmission, further research and surveillance activities are needed to definitively determine the role of animals in community transmission of SARS-CoV-2.
当前由可能源自蝙蝠的严重急性呼吸系统综合征冠状病毒 2(SARS-CoV-2)引起的 COVID-19 全球大流行,突显了对新兴人畜共患疾病事件采取“同一健康”应对措施的持续需求。了解人与动物的接触及其与疾病传播的相关性,仍然是许多新发人畜共患病的一个关键控制点。确定各种动物物种对感染 SARS-CoV-2 的易感性,以及动物在疾病流行病学中的作用,对于为本次大流行提供适当的人类和兽医公共卫生应对措施至关重要。我们进行了范围界定文献综述,以收集、评估和展示有关动物中 SARS-CoV-2 感染的现有研究证据。实验研究已经成功地证明了在实验条件下,猫、雪貂、仓鼠、蝙蝠和非人类灵长类动物中 SARS-CoV-2 的感染和传播。狗似乎对 SARS-CoV-2 的易感性有限,而其他家畜物种(包括猪和家禽)似乎不易感。在动物中发生的自然发生的 SARS-CoV-2 感染似乎并不常见,截至撰写本文(2020 年 7 月初)时,有 14 只宠物、8 只圈养的大型猫科动物和数量不详的养殖水貂检测呈阳性。狗的感染通常无症状,而猫科动物的呼吸道和/或胃肠道疾病的临床症状往往是轻度至中度,水貂则是严重至致命。大多数动物被认为是通过与 COVID-19 患者密切接触而感染的。在家庭环境中,病毒传播是自我限制的;然而,在高密度动物环境中,动物之间可能会持续传播。迄今为止,正在调查两个潜在的动物向人类传播的病例,这两个病例均发生在感染的水貂养殖场。鉴于全球数百万例 COVID-19 病例,以及人畜共患和人间传播病毒的持续潜在风险,需要进一步的研究和监测活动来明确确定动物在 SARS-CoV-2 社区传播中的作用。
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