Add Yahoo as a preferred source to see more of our stories on Google. "When COVID first appeared, we saw the lower respiratory tract manifestation, that is pneumonia. We don't see that anymore," Dr.

A dismantled health infrastructure leaves the U.S. incredibly vulnerable, warns infectious-disease expert Michael Osterholm.

If you partied hard or just enjoyed seeing family during the winter holidays (whether it was Christmas, Hanukkah, Kwanzaa, New Year’s Eve or all of them!), chances are you were exposed to their germs.