US has already had more measles cases in 2024 than all of 2023

Illustration of large, pink measles virus cells against blue background.

The number of measles cases reported in the U.S. so far this year has already surpassed the total number of infections counted in 2023.

According to data released by the Centers for Disease Control and Prevention (CDC), 64 confirmed and suspected cases of measles had been reported across 17 states as of March 21. Last year, 58 total cases were reported in 19 states and Washington D.C.