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.

The current number of measles cases in the U.S. is at its highest level in more than 30 years, according to new data released Wednesday by the Centers for Disease Control and Prevention. The CDC said ...

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