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 ...

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 ...

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 ...

An infectious disease specialist took the time to explain what herd immunity is, how it works and when it might affect the spread of COVID-19. Dr. Frank Esper works for the Cleveland Clinic Children's ...

Find out how different vaccines for the coronavirus cause your body to create antibodies that fight the virus.

A large, long-term study led by an Albert Einstein College of Medicine researcher has found that the introduction of the human papillomavirus (HPV) vaccine in community settings is highly effective in ...

Getting a COVID booster could save your life, even if you’ve had multiple prior infections and vaccinations. A study, published on Wednesday in the New England Journal of Medicine, showed that last ...

Therapeutic cancer vaccines have experienced a remarkable resurgence over the past decade, representing a paradigm shift in oncology toward harnessing the immune system's intrinsic ability to combat ...

As flu cases are surging across the United States, here's what to know about whether or not you can still get the vaccine.