The COVID-19 variant KP.3.1.1 rose 12.7% and now makes up over 50% of COVID cases, the CDC Nowcast data tracker shows.

The side effects of newly discovered COVID strain XEC might not be more severe, but appears to be more contagious, ...

COVID symptoms can be mild, severe, or nonexistent, according to the CDC—and can appear as late as two weeks after you’ve ...

COVID-19 cases in Wisconsin and across nearly half of the United States are at "high" and "very high" levels of activity at ...

A new covid-19 variant called XEC may spread more easily than past variants, but current vaccines are still effective against ...

Centers for Disease Control Director Mandy Cohen spoke with Boston 25 on Thursday morning about how Massachusetts residents ...

The new "XEC" COVID-19 variant spreading rapidly in Europe has arrived in the US. What are the symptoms, will it cause a fall ...

Here we go again. Not to be an alarmist, but COVID never did go away. It’s been creeping around, changing its composition, ...

Whooping cough cases have gone up in the U.S. compared to last year, according to new statistics from the Centers for Disease ...

COVID levels in the U.S. remain high, according to wastewater detections, which is a retreat from the CDC’s label of “very ...

Flu season approaches and there's a new COVID variant. The time to act is now, or soon, according to the two largest local ...

The new and contagious XEC COVID-19 variant is spreading rapidly in several countries. Will it cause a surge in the U.S.?