Vaccination

Polio vaccine in the crossfire of misinformation

As scientists around the world rush to find a vaccine to stem the spread of COVID-19, another deadly disease, polio, has become the latest target of misinformation campaigns online.

Diseases, Conditions, Syndromes

Video: Who should get a COVID-19 vaccine first?

A committee of The National Academies of Sciences, Engineering and Medicine is readying a report with recommendations for equitable distribution of a COVID-19 vaccine. In this Q&A, bioethicist Dr. Nicole Hassoun of Binghamton ...

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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.

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