There have been 1,277 confirmed cases of measles this year, which has eclipsed 2019 to become the highest annual total since the disease was declared eliminated in 2000. And there is still half

The number of measles cases in the U.S. has reached a 33-year record high, years after it was officially eliminated in the country, prompting public health experts to sound the alarm that other diseases could experience a similar resurgence.

According to the US Centers for Disease Control and Prevention, two doses of the MMR (measles, mumps and rubella) vaccine are 97% effective at preventing measles, while one dose is 93% effective. It is uncommon for someone who is fully vaccinated to develop measles, although the first breakthrough case of 2025 was recently detected in Colorado.

Measles cases in the United States are the highest they’ve been since the country eliminated the disease in 2000. The U.S. has reported 1,277 cases since the start of the year, according to NBC News’ tally of state health department data.

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

The United States has reported more cases in 2025 than in any year since 1992. The majority of this year's cases stem from the Texas outbreak.

BLOOMINGTON- While there are currently no reported measles cases in Monroe County, the Monroe County Health Department strongly encourages MMR vaccination for Monroe County

CHICAGO (WLS) -- Health officials in Illinois will give an update Friday on measles cases in the state. Officials say there are currently 10 measles cases in Illinois as they are asking clinicians to be on high alert and to report any suspicion immediately even before getting lab results back.

Measles cases surpass 2019 count in the U.S. Minnesota and neighboring states report cases as Texas outbreak cools.