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.

Measles was declared eliminated from the United States 25 years ago. Now, the Centers for Disease Control reports major ...

CDC data shows 2025 is now the worst year for measles cases in this country in more than three decades. More than 150 people ...

An interactive tool from Johns Hopkins University lets you track the disease as the U.S. suffers its worst year in decades.

Measles was considered eradicated in the United States in 2000. For the first time in 25 years, cases have reached a new high ...

The number of measles cases in the United States has surpassed 2019's wave of infections, according to Centers for Disease ...

“Ohio is on the front lines really of tick expansion and new ticks here in the eastern half of the United States,” McDermott ...

New landmark research has successfully mapped 37,000 years of infectious disease across ancient human populations.

Emergency room visits for tick bites are at a six-year high. Here’s how to prevent tick bites, and what to do if you get ...