Eman Anis of the School of Veterinary Medicine, Frederic Bushman of the Perelman School of Medicine, and Suresh Kuchipudi of Penn State spoke about the spread of COVID-19 in animals. Because there is less surveillance of the virus in non-human populations, “It could be evolving in hosts we are not aware of,” Anis said.
https://www.inquirer.com/health/coronavirus/deer-coronavirus-people-penn-vet-mutations-delta-20220307.html Philadelphia Inquirer