News tagged with vaccine

Related topics: immune response · immune system · influenza · flu · infectious diseases

Vaccines are safe, and they save lives

David Kimberlin, M.D., is the vice chair of Pediatrics, co-director of the Division of Pediatric Infectious Diseases at UAB and a physician at Children's of Alabama. He is the editor of the American Academy of Pediatrics' ...

Oct 06, 2015
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A vaccine is a biological preparation that improves immunity to a particular disease. A vaccine typically contains a small amount of an agent that resembles a microorganism. The agent stimulates the body's immune system to recognize the agent as foreign, destroy it, and "remember" it, so that the immune system can more easily recognize and destroy any of these microorganisms that it later encounters.

Vaccines can be prophylactic (e.g. to prevent or ameliorate the effects of a future infection by any natural or "wild" pathogen), or therapeutic (e.g. vaccines against cancer are also being investigated; see cancer vaccine).

The term vaccine derives from Edward Jenner's 1796 use of the term cow pox (Latin variolæ vaccinæ, adapted from the Latin vaccīn-us, from vacca cow), which, when administered to humans, provided them protection against smallpox.

This text uses material from Wikipedia, licensed under CC BY-SA

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