4 ms·
To summarize it’s due to cross-reactive immunity resulting from previous coronavirus (but not CoV-2) infections. Up to 90% of uninfected adults have these antib
by programmarchy 5y ago
To summarize it’s due to cross-reactive immunity resulting from previous coronavirus (but not CoV-2) infections. Up to 90% of uninfected adults have these antibodies already.
Could this explain why many people have mild cases but some have severe cases? I’d be curious to find out how effective the cross-reactive antibodies are compared to ones produced by a vaccine.
- ed25519FUUU 5y agoThat’s my thinking. Why many adults can be asymptotic or mostly mild symptoms. The vast majority of covid infections are mild symptoms after all.
- scotty79 5y agoI read that more past exposure to coronaviruses might be the cause why older people suffer from covid more because their immune system is tuned down because of mildness of other coronaviruses it previously encountered so many times. https://www.iflscience.com/health-and-medicine/prior-exposure-to-seasonal-coronaviruses-might-increase-covid19-vulnerability/ https://www.iflscience.com/health-and-medicine/prior-exposur...