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.

The U.S. thought it had eradicated measles 25 years ago. Now the highly contagious disease is back, spiking to more than ...

While tick bites increase every summer, with another small spike in the fall, 2025's numbers are the worst since 2019, according to the CDC.

Ever wondered which fast food chain boasts the unhealthiest menu items? This study ranked the top 10, here's what they are.

There are 1,288 measles cases throughout 38 U.S. states so far this year, which is the most since 1992, according to new data ...

Michael Angarone, infectious diseases specialist at Northwestern Medicine joins CBS New York to discuss the rise in measles.