Measles is a disease health officials believed they had virtually wiped out in the U.S. In the first four months of this year, 126 people have been infected. That's the highest level since 1996. Worldwide, measles is the leading cause of death in children. Chief Medical Correspondent Dr. Sanjay Gupta weighs in.
Stephanie Elam has new information on these latest cases of measles.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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