4 ms·
https://www.medrxiv.org/content/10.1101/2020.07.23.20160762v2 https://www.medrxiv.org/content/10.1101/2020.07.23.20160762v... was a similar study a couple month
by streptomycin 6y ago
https://www.medrxiv.org/content/10.1101/2020.07.23.20160762v2 https://www.medrxiv.org/content/10.1101/2020.07.23.20160762v... was a similar study a couple months ago that estimated 10-20%, rather than the 34.2-47.5% in this paper. The bigger question is how long immunity lasts, which is still not known.
- nradov 6y agoImmunity isn't a binary condition which lasts for a certain length of time and then stops. It exists on a spectrum. The best evidence we have indicates that most recovered patients will retain a significant level of immunity for at least several years. https://www.jimmunol.org/content/early/2020/09/03/jimmunol.2000839 https://www.jimmunol.org/content/early/2020/09/03/jimmunol.2...
- rossdavidh 6y agoTests this year on blood from people who had SARS in 2003, indicated that 17 years later they still had T-cell responses . On the other hand, coronaviruses which are experienced as "colds" apparently have a lot less retention of immune system recognition. Optimistic scenario is that the immune system is "smart" enough to recognize which infections are a big deal which must be remembered forever, and which are not. Pessimistic scenario is we got lucky with SARS, and may not with Covid-19.