Live

Watch CBSN Live

How do you know if you're at risk of catching measles?

Reports of the measles outbreak in Disneyland is prompting people to ask the big question: How do you know if you are immune to the virus? Dr. Jon LaPook explains.
View CBS News In
CBS News App Open
Chrome Safari Continue
Be the first to know
Get browser notifications for breaking news, live events, and exclusive reporting.