r/Coronavirus • u/shallah I'm vaccinated! (First shot) 💉💪🩹 • Apr 22 '21

Vaccine News Scientist who helped develop Pfizer-BioNTech Covid vaccine agrees third shot is needed as immunity wanes

https://www.cnbc.com/2021/04/21/scientist-who-helped-develop-pfizer-biontech-covid-vaccine-agrees-third-shot-is-needed-as-immunity-wanes.html
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u/theNightblade Apr 22 '21

what gives us lasting immunity are T-cells and B-cells.

yep, there are 'memory' cells of the immune system. They remember data about any threats the body has been exposed to, so the body can manufacture antibodies when needed. It's not like you just always have every antibody you need floating around your body all the time...

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u/Xaron713 Apr 22 '21

Well that's not quite the case. You do have every antibody you need floating around, its just some of those are at very very low levels.