A combination of an uptake in measles vaccinations and a buildup of natural immunity is likely behind a decline of new measles cases in the U.S., experts say.

America's vaccination rates are walking a tightrope, and even the slightest dip in immunizations could plunge the country ...

Iowa reported its first case of measles since 2019 on Friday, the latest state to record a case of the highly contagious ...

A person infected with measles recently attended a New Jersey Shakira concert. More than 1,000 cases have been confirmed ...