The Lancaster cases are landing in the middle of a nationwide upswing. Federal figures show there were 733 confirmed measles cases in the United States as of Feb. 5, 2026, according to the CDC.

The latest data from the Centers for Disease Control and Prevention (CDC) shows that more than 99.99% of those fully vaccinated against COVID-19 in the U.S. have not had a breakthrough case resulting ...

If infections continue at their current pace, the US could see triple the number of measles cases seen last year.

There have been 733 cases so far this year, a CDC report said.

Add Yahoo as a preferred source to see more of our stories on Google. At least 171 measles cases have been confirmed in the U.S. so far this year, according to newly updated data from the Centers for ...

In a WSJ editorial this week, CDC principal deputy director Ralph Abraham tried to push back against criticism.

Add Yahoo as a preferred source to see more of our stories on Google. The U.S. has surpassed 2,000 measles cases for the first time in more than 30 years, according to data from the Centers for ...

According to the US Centers for Disease Control and Prevention, two doses of the measles, mumps and rubella, or MMR, vaccine are 97% effective at preventing measles, while one dose is 93% effective.

AM I PROTECTED? Measles cases across Florida may have you questioning when you last got your MMR vaccine — or if that shot ...

Last year, measles cases in the U.S. reached a 33-year high. At least 171 measles cases have been confirmed in the U.S. so far this year, according to newly updated data from the Centers for Disease ...