News tagged with vaccine

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

Researchers profile four types of non-vaccinators

While scientists are continuously improving vaccinations to stop the spread of disease, many people continue to opt out. In a new review of the literature, researchers identified four types of people who decide not to vaccinate ...

Oct 01, 2015
popularity61 comments 0

Egg shortage won't affect flu vaccine supply

An egg shortage has driven up prices at the supermarket, caused in part by an outbreak of avian flu in the Midwest. But health officials say there is no need to worry about the supply of certain eggs outside the kitchen: ...

Sep 07, 2015
popularity16 comments 0

Old vaccine trains immune system

Not only the acquired immune system but also the innate immune system has a memory. And the BCG vaccine against tuberculosis can stimulate this memory. After a BCG vaccination the innate immune system responds better to a ...

Sep 23, 2015
popularity20 comments 0


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

Subscribe to rss feed