The new cases are part of a national surge fueled by multiple factors, including a large outbreak in West Texas, illnesses ...

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.

Tick populations have reached a record high in several states this year, resulting in a spike in emergency room visits for bites.