News tagged with vaccine

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

One child in five still not vaccinated: WHO

One-fifth of the world's children are still not receiving routine life-saving vaccinations and efforts to ensure global immunisation coverage remain "far off track," the World Health Organization said Wednesday.

Apr 22, 2015
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Study supports HPV vaccination guidelines

(HealthDay)—New research finds that young women who get the HPV vaccine gain significant protection against infection in three parts of the body if they haven't already been exposed to the human papillomavirus.

Apr 21, 2015
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Vaccine

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.

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