More than 6 million Americans are diagnosed with Alzheimer's disease, a number expected to climb as the population ages.

Unvaccinated children were more than 13 times as likely as vaccinated children to test positive for pertussis, the analysis ...

In the early 1950s there were four vaccines routinely used in the United States: diphtheria, tetanus, pertussis, and smallpox. Three of these vaccines (diphtheria, tetanus, and pertussis ...