New evidence suggests that many Americans who travel abroad may wind up bringing home some unintended souvenirs.

Measles may seem like an ailment from a bygone era, but new evidence suggests that many US children may still be at risk today.

One of the childhood vaccinations recommended by the CDC is the one for pneumococcal bacteria. This bacteria can cause some types of meningitis.

Getting your flu shot — and nine other common vaccines — just became a bit more convenient. No need to hassle with a doctor appointment. Just drop by Walmart.