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 ...

Vaccines are an important part of modern medicine, helping to build up a person's immunity and protect them from illness, ...

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 ...

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 ...

Back in the early 1900s, about one in five children died before entering kindergarten. The most common reason: infectious disease. Today, just one in 27 dies so young, most often because of an ...

To the editor: Why do people misunderstand vaccines (“When I got COVID, readers said it proved vaccines don’t work. What has RFK Jr. wrought?,” Sept. 9)? It’s really not difficult. Many people seem to ...

Yesterday we explored four key myths and why they don’t stand up to scrutiny: ‘Vaccines were never properly tested’ ...