Whilst immune memory helps but does not guarantee against covid reinfection. Some countries are considering “immunity passports”.

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Description
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Immune memory helps the body recall how it handled past reinfections. This is not the same as immunity. Some countries are considering an “immunity passport” to test if they a person has come into contact with the covid virus before they travel. WHO warns against such a scheme.

Time Stamps
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0:00 Intro
0:14 Immune Memory against covid reinfection
0:23 Second covid infections can reoccur
0:27 Immune memory can remember past infections
0:39 Not covid 19 immunity
0:42 Some countries are considering immunity passports
0:54 The World Health Organization warns against immunity passports

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