In case someone posts this article in your timeline: This is an extremely misleading headline. That is not a widespread conclusion from the S Korea data at all. A better interpretation would be 1/2https://www.msn.com/en-ca/news/world/scientists-conclude-people-cannot-get-coronavirus-twice/ar-BB13tm64?ocid=sf2&fbclid=IwAR3igwS0UQKEGMHIiCFxduhL1KqTXVlDwyFyFqNbnWE0p8TTPJEybm2djVY …
Some vaccines provide very long protection and others have to be periodically boosted. Measles vaccine provides lifelong immunity for almost everyone whereas tetanus has to be repeated every 10 years. Flu vaccine every year because the virus mutates quickly. 1/2
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We don’t have any idea yet where COVID will end up. Also, there are some viruses that we’ve never been able to develop vaccines for. Example: colds, caused by rhinoviruses; HIV; herpes. 2/2
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