Earlier quoted context omitted.
This sounds apocryphal. Second infections are incredibly rare , let alone three in twelve months. Like clockwork, every discussion of this matter on a discussion board brings out at least one person claiming to know people who have been re-infected, yet the number of confirmed examples is measured in the low hundreds, worldwide.
I think it’s low because in the beginning no one could get tested for COVID. I had an illness back in March 2020 that knocked me out for 2 weeks. Could have been COVID but my state had 0 available test kits so no one can confirm it. February 2021, I’m I’ll again for 2 week. This time it’s confirmed COVID. If we expect immunity to only last about 12 months, then it could have been reinfection especially considering by…
2) We don't "expect immunity to only last about 12 months". It's been about 12 months since the first cases were confirmed, so that's as far as we can say.