In this May 13, 2020, file photo, Dr. Luis Medina-Garcia, University Medical Center infectious …

In this May 13, 2020, file photo, Dr. Luis Medina-Garcia, University Medical Center infectious ...

In this May 13, 2020, file photo, Dr. Luis Medina-Garcia, University Medical Center infectious disease specialist, speaks to the media at the Southern Nevada Health District Office in Las Vegas. (AP Photo / Las Vegas Sun, Wade Vandervort, Pool)