U.S. has already posted more measles cases than in any year since 1991 and 2025 is only half over

The U.S. is having its worst year for measles spread in more than three decades, and the year is only half over.

The national case count reached 1,288 on Wednesday, according to the U.S. Centers for Disease Control and Prevention, though public health experts say the true figure may be higher.

The CDC’s count is 14 more than 2019, when America almost lost its status of having eliminated the vaccine-preventable illness — something that could happen this year if the virus spreads without stopping for 12 months.