Abstract：
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has lasted for two years and caused millions of infections and deaths in humans. Although the origin of SARS-CoV-2 infection in humans remains unknown, infection in animals has been frequently reported in varieties of animals all over the world. Both experimental and natural infections of SARS-CoV-2 in different animal species provide useful information on viral host range and pathogenicity. As the pandemic continues to evolve, SARS-CoV-2 infection in animals will be expanding. In this review, we summarized SARS-CoV-2 testing and infection in animals as well as SARS-CoV-2 strains and transmission in animals. Current data showed that at least 18 different animal species tested positive for SARS-CoV-2. These 18 animal species belong to pet, captive, farmed, and wild animals. Fifteen of the eighteen animal species were known to be positive for the Delta variant and ten animal species were infected with two different types of variants. Human-to-animal, animal-to-animal, and animal-to-human transmission events were suggested in different outbreaks involved in animal infection with SARS-CoV-2. Continued testing, immunization, and surveillance are warranted.
摘要：
严重急性呼吸道综合症冠状病毒2（SARS-CoV-2）大流行已经持续了两年，并导致数百万人感染和死亡。尽管SARS-CoV-2感染在人类中的起源仍然未知，动物感染在世界各地的各种动物中经常有报道。SARS-CoV-2在不同动物物种中的实验和自然感染都提供了有关病毒宿主范围和致病性的有用信息。随着流行病的继续发展，SARS-CoV-2在动物中的感染将扩大。在这次审查中,我们总结了SARS-CoV-2在动物中的检测和感染以及SARS-CoV-2在动物中的毒株和传播。目前的数据显示，至少有18种不同的动物对SARS-CoV-2呈阳性。这18种动物属于宠物，俘虏,养殖,和野生动物。已知18种动物中有15种对Delta变体呈阳性，10种动物感染了两种不同类型的变体。人对动物,动物对动物，在与SARS-CoV-2动物感染有关的不同暴发中，提示了动物与人之间的传播事件。继续测试,免疫接种,监视是有必要的。
