Blacklegged ticks now account for 99% of reported tick bite illnesses in Vermont, and more than half tested carry Lyme disease.

Emergency room visits for tick bites this year are at the highest levels since 2019, especially in the Northeast, according ...

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.