A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to ...

A new strain of COVID-19, XFG, is spreading rapidly across the world, including in the United States. Anecdotally, people who ...

Experts explain oral yeast infections (oral thrush, candidiasis of the mouth)—including oral thrush symptoms, treatment ...