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 ...

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 ...

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 ...

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 ...

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

The study examined 180 patients with advanced lung cancer who received a COVID vaccine within 100 days before or after beginning immunotherapy, as well as 704 similar patients who did not. Vaccinated ...

There are different kinds of vaccines, and each requires different processes to move from the laboratory to your physician's ...

West Coast states are teaming up to issue their own vaccine guidelines in the face of rapid changes at the Centers for Disease Control and Prevention and the Food and Drug Administration. The federal ...

Vaccinations used to seem simple. Your doctor would tell you which to get, and you’d roll up your sleeve at the office or a nearby pharmacy. Now we’re seeing changing recommendations, and some people ...

Researchers found a way to boost aging immune systems by turning the liver into a temporary source of immune support signals ...

Herd immunity occurs when enough people in a group are immune to a specific infection that it cannot spread easily from person to person. Vaccination programs have been successful in creating herd ...