Professor in Florida says COVID-19 mutations will continue, but vaccines should still work At least 50 cases of the Coronavirus mutation have been found in the United States, and almost half are in Florida. By: WFTS Staff and last updated 2021-01-11 16:08:57-05 TAMPA, Fla. â At least 50 cases of the Coronavirus mutation have been found in the United States, and almost half are in Florida. But USF Professor Dr. Tom Unnasch says the virus is very good at what it does. Mutate. âItâs not really a big surprise that we are starting to see these variants that are coming up that are making the virus more efficient," says Unnasch.