Before immunization was widely available in the United States, there were between three and four million cases of measles each year. After immunization ...

Measles cases have been reported by 39 states and jurisdictions in the United States, the worst outbreak since 2019.

People who attended a prenatal clinic in Fort St. John, B.C., have been told they may have been exposed to measles.

Measles cases in the U.S. reach a 33-year high with 1,300 infections across 38 states, mostly in unvaccinated individuals, ...