Vaccines boost the immune system's ability to fight off diseases. Vaccines undergo rigorous testing to ensure safety and effectiveness. Widespread vaccination contributes to herd immunity, protecting ...

Herd immunity occurs when enough people become immune to a disease, either through vaccination or previous infection. This can reduce the likelihood of it spreading and increase protection for ...

The immune system’s first encounter with a virus or vaccine establishes a “starting template” that shapes its response to new ...

Plenty of people – about 1 in 3, according to some studies — feel bad for a day or two after they get a flu shot. The most common symptoms include headaches, muscle aches, fatigue and fever, all of ...

This study shows that SARS-CoV-2 infection and vaccination generate strong, highly specific spike-binding immune responses ...

While the new findings are encouraging, "vaccines won’t do any good if people don’t get them," one expert said.

Vaccines work by helping your body build protection against harmful viruses and bacteria. And while getting a shot may not be fun, vaccines are one of the best ways to keep you and your family safe ...

The FDA is already about to start work on the vaccine for next season. — -- Flu season isn’t over yet, but the U.S. Food and Drug Administration (FDA) recently announced that in less than two ...

Measles and smallpox, for example, are viruses; Streptococcus pneumoniae is a bacterium that causes a range of diseases, ...