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.

Health experts say the true case count may be higher. Measles was considered eliminated in the U.S. in 2000, but if cases continue to rise at the rate it has, that status could change. The United States just reported its highest number of measles cases in more than three decades.

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.

The measles outbreak has hit a new high, with over 1,200 cases reported in 2025 so far. The last time infections were that high was in 1992.

Confirmed measles cases in the U.S. reached 1,288, data from the Centers for Disease Control and Prevention showed on Wednesday, the highest since the childhood disease was declared eliminated from the country in 2000.

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 from the CDC released this week.

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

There have now been more measles cases in 2025 than in any other year since the contagious virus was declared eliminated in the United States in 2000, according to new data released Wednesday by the Centers for Disease Control and Prevention.