4 ms·
If natural immunity from COVID-19 only lasted 90 days we would see millions of cases of second and third re-infections by now. Studies have found only a tiny, t
by standardUser 6y ago
If natural immunity from COVID-19 only lasted 90 days we would see millions of cases of second and third re-infections by now. Studies have found only a tiny, tiny number of confirmed reinfections within ~10 months.