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 know about symptoms and vaccines.

First, the good news: While food poisoning symptoms can linger for up to a week, Dr. Dasgupta says most cases clear up in a ...

People board cruise ships each year seeking relaxation, but some vessels are hiding filthy secrets below deck. The CDC ...