Why are multiple doses of some vaccines necessary? Find out.

Explore the relationship between vaccines and memories.

Read about diphtheria cases in Europe and hear why children get so many vaccines.

Find out why the birth dose hepatitis B vaccine recommendation is important and see how many other countries also recommend this approach for protecting their citizens from hepatitis B.

Find info about thimerosal in influenza vaccines and get an update on the U.S. measles outbreaks.

Find out if children should get vaccinated early during a measles outbreak; hear or read the 2025 Hilleman winning essays; find info about recent changes to COVID-19 vaccine recommendations and more.

Read why it’s important to separate knowledge-based statements from feelings-based ones. Learn about considerations related to misinformation, and see if you can tell the difference between knowledge, feelings and misinformation in the “Try it” section of the article.

Looking for info on measles? Wondering about the chance of a bird flu pandemic? Get answers to these questions and more.

The short answer is no, but confusion stemming from the April ACIP's meeting left some concerned. Let’s take a closer look.

Watch a new animation on how cells defend against foreign DNA, and find information about Adolescent Immunization Action Week.