Two studies showing high levels of Covid-19 infection among wild deer in the US have renewed concerns about the virus spreading through animal populations.
两项研究显示,美国野生鹿中新冠病毒感染水平很高,这重新引发了人们对病毒在动物群体中传播的担忧。
您已阅读3%(202字),剩余97%(7520字)包含更多重要信息,订阅以继续探索完整内容,并享受更多专属服务。