More than 250 cases of measles have been reported in the U.S., nearly all of which have been associated with three outbreaks, according to the Centers for Disease Control and Prevention. In light of the rise in cases,

Amid the measles outbreak, which is expected to “expand rapidly,” an expert explains how to stay protected from the virus

Adults born before 1957 are assumed to have natural immunity because they were likely exposed to measles before the vaccine was created. Adults born and vaccinated between 1957 an

Older adults may lack protection. Here's the scoop on your risk, how to test immunity and where to find affordable boosters.