Hundreds of scientific studies have found no link between vaccines and autism. But some doctors say they're fielding more and more questions from parents on the topic.

NPR's Scott Detrow speaks with Dr. James Campbell, an expert on childhood infectious diseases, about the CDC's new messaging on the relationship between vaccines and autism.

U.S. flu rates remain low, but experts are keeping an eye on a new strain that’s been linked to unexpectedly early and severe ...

The public-facing website of the U.S. Centers for Disease Control and Prevention was changed this week, breaking with scientific consensus and stating there could be a link between vaccines and autism ...

On Wednesday, the agency reversed its long-held position that there's no link between vaccines and autism. Outside experts ...