In the past 15 years the Kenyan government has made great strides in preventing and controlling malaria. It has issued insecticide treated bed nets, sprayed people's homes with insecticides and ensured that there is widespread ...
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Researchers have developed a vaccine for one of the most dangerous types of synthetic cathinones, or bath salts. The vaccine blunts the illegal stimulant's effects on the brain, which could help recovering drug users who ...
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The World Health Organization says it has coordinated shipment of an experimental Ebola vaccine and drugs to treat a laboratory scientist in Hungary who was exposed to the potentially deadly disease earlier this month.
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A Rice University study predicts that this fall's flu vaccine—a new H3N2 formulation for the first time since 2015—will likely have the same reduced efficacy against the dominant circulating strain of influenza A as the ...
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The World Health Organization says the first-ever vaccine for dengue needs to be dealt with in "a much safer way," meaning that the shot should mostly be given to people who have previously been infected with the disease.
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Melinda Colite shakes with rage as she clutches a photo of her grandson, who she says died after getting the anti-dengue fever vaccine at the heart of a bitter scandal in the Philippines.
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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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