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@Billius27@mstdn.ca @Greengordon
This was something I was interested in a while back and I just looked and it doesn't look like there's been anything new since then. So:
https://www.frontiersin.org/articles/10.3389/fmed.2021.684864/full
https://www.nature.com/articles/s41586-021-03647-4
The answer seems to be at least a year and possibly forever.
Caveat being that I'm not a doctor, or even a biologist, so sometimes I misinterpret these types of studies. Feel free to tell me if I'm wrong.
@Billius27@mstdn.ca @Greengordon
To the original question, about immunity, this doesn't mean that your body is producing sufficient antibodies that will produce immunity, nor antibodies that "keep up" with new variants. Just that they exist within you, and can theoretically therefore be detected.