On August 27, 2021 the U.S. government said it had confirmed the world’s first cases of COVID-19 in deer. The U.S. Department of Agriculture reported infections of SARS-CoV-2, the virus that causes COVID-19, in wild white-tailed deer in the state of Ohio. There were no reports of deer showing symptoms of infection. The USDA reported last month that white-tailed deer populations in Illinois, Michigan, New York, and Pennsylvania had been exposed to SARS-CoV-2, based on a study that analyzed serum samples from free-ranging deer for antibodies to the disease.
The USDA has previously reported COVID-19 in animals including dogs, cats, tigers, lions, snow leopards, otters, gorillas and minks.