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[[Image:Vaccine.jpg|right|thumb|350px|[[Avian flu]] vaccine development]]
[[Image:Vaccine.jpg|right|thumb|350px|[[Avian flu]] vaccine development]]
A '''vaccine''' is a pharmaceutical product containing an [[antigen]] designed to stimulate the production of antibodies against a particular disease or diseases.<ref>https://www.sciencenewsforstudents.org/article/explainer-what-vaccine</ref> While this sounds like a beneficial thing in theory, there is significant controversy on this topic. There are numerous reasons why some people prefer to avoid taking vaccines, but laws and other rules (often pushed into place by those who stand to make significant profit) frequently mandate them.
A '''Vaccine''' provides acquired immunity to a specific [[disease]]. Vaccines are currently the most effective way of preventing infectious diseases.<ref>https://web.archive.org/web/20170829133723/https://www.cdc.gov/oid/docs/ID-Framework.pdf</ref> Vaccines 'train' the[[Immune system]] to become resistant to a certain disease by making it fight a smaller concentration of said disease.<ref>https://www.livescience.com/32617-how-do-vaccines-work.html</ref> Despite claims that vaccines can cause autism this is incorrect and there is no reason to be concerned. <ref>https://www.cdc.gov/vaccinesafety/concerns/autism.html</ref>
==Mechanism==
==Mechanism==
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