Editing Vaccination (section)

===Preventing disease versus preventing infection===

Some vaccines, like the smallpox vaccine, prevent infection. Their use results in [[sterilizing immunity]] and can help eradicate a disease if there is no animal reserve. Other vaccines, including those for {{Nowrap|[[COVID-19]]}}, help to (temporarily) lower the chance of severe disease for individuals, without necessarily reducing the probability of becoming infected.<ref>{{Cite web |url=https://theconversation.com/coronavirus-few-vaccines-prevent-infection-heres-why-thats-not-a-problem-152204 |title=Coronavirus: few vaccines prevent infection – here's why that's not a problem |date=5 January 2021 |last=Caddy |first=Sarah L. |website=[[The Conversation (website)|The Conversation]] |access-date=18 December 2022 |archive-date=18 December 2022 |archive-url=https://web.archive.org/web/20221218103955/https://theconversation.com/coronavirus-few-vaccines-prevent-infection-heres-why-thats-not-a-problem-152204 |url-status=live }}</ref>