What we know about covid-19 reinfection so far – The BMJ   Commentary on Twitter With most coronaviruses, recovery confers a degree of immunity to reinfection. But a small number of patients have caught #COVID19 for a second time. What do we know and how worried we should be?https://t.co/NOA0TWAS2g@stokel — The BMJ (@bmj_latest) January 19, […]

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