Reply to If you can get re-infected with CV19 because there’s no immunity after, why will a vaccine work?

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[quote=Anonymous]I think part of the conventional wisdom regarding "you can get re-infected" (and yes there have been a very small number of documented cases) is so that people who think they had it already aren't running around like everything is normal.

My entire family had it - I am 99.9% sure of this even though we didn't get positive tests because they weren't available in late March to us. However, we were around people who did get positive Covid tests, we all had symptoms, and we all tested positive for antibodies ~2 months later.

However, we don't run around without masks and have large gatherings just because we know we are almost certainly still immune. You just never know. Maybe, despite all these factors, we didn't have it. Maybe one of us is that rare person who mounted antibodies but yet didn't get long-term T-cell immunity from it. So until more is known, it is safer to assume that you can get reinfected.

There was just a study out that indicated immunity should last years if not decades. So I think more will be known soon. My suspicion is that immunity will be quite long-lasting, either from having the disease or the vaccine.[/quote]

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