Cases of COVID, flu, RSV and norovirus appear to be on the rise in the U.S. as millions of Americans wrap up the holidays. CBS News medical contributor Dr. Celine Gounder has more on the viruses.
Cases of COVID, flu, RSV and norovirus appear to be on the rise in the U.S. as millions of Americans wrap up the holidays. CBS News medical contributor Dr. Celine Gounder has more on the viruses.