Measles is caused by a highly contagious virus that’s airborne and spreads easily when an infected person breathes, sneezes ...

Of those infected across the U.S., 97% of cases came from those who are unvaccinated or whose vaccination status is unknown.

A half dozen states have reported measles outbreaks among 29 states with confirmed cases totaling 884 so far this year, the ...

Tens of millions of new measles cases could emerge in the United States if vaccination rates continue to decline, according ...