The spread of SARS-CoV-2 infections through many mammal species in the wild raises the specter of deer becoming a SARS-CoV-2 reservoir — a permanent home for the virus and a regular source of outbreaks in other animals, including humans.
Bats are unique. For instance, they are the only mammals that can fly. But they also seem to be the mammal that hosts the greatest number of highly virulent viruses that can infect humans. Why?
