LogFAQs > #947090167

Here is a pretty good Washington Post article about it:

https://tinyurl.com/yyrfsmha

6. What do the reinfections say about prospects for an effective vaccine?

Not necessarily anything. In the one reported case of reinfection where the first bout was known to be serious, the second was mild. One theory is that the immune system requires a tough challenge in order to be adequately prepared to take on the virus. A vaccine might provide that training, and not necessarily just by producing antibodies. Several experimental Covid-19 vaccines prompt the production of a less well-known immune player, T cells. While preventing infection with SARS-CoV-2 is the ultimate goal, researchers say that a vaccine that protects against illness or even against severe disease would be very useful.

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