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NEW: Reinfection risk of #COVID19 now estimated at 1 in 10,000 cases from latest @Cornell and @WHO study. Details in below thread 
https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧵" title="Thread" aria-label="Emoji: Thread">. https://twitter.com/drericding/status/1311049145759694848">https://twitter.com/drericdin...
2) And they did a detail investigation- they literally turned over every rock from 15,808 people with multiple test swabs... and went thru 243 people medical records and did detailed analysis of these potential reinfections and https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧬" title="DNA" aria-label="Emoji: DNA"> to find the 4 new reinfection cases. Hardcore.
to find the 4 new reinfection cases. Hardcore." title="2) And they did a detail investigation- they literally turned over every rock from 15,808 people with multiple test swabs... and went thru 243 people medical records and did detailed analysis of these potential reinfections and https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧬" title="DNA" aria-label="Emoji: DNA"> to find the 4 new reinfection cases. Hardcore." class="img-responsive" style="max-width:100%;"/>
3) the 1 in 10,000 average comes from this calculated risk. And more precisely 1 cases from 30,000 person-weeks.
https://abs.twimg.com/emoji/v2/... draggable="false" alt="📌" title="Reißzwecke" aria-label="Emoji: Reißzwecke">reinfection risk estimated at 0.01% (95% CI: 0.01-0.02%)
https://abs.twimg.com/emoji/v2/... draggable="false" alt="📌" title="Reißzwecke" aria-label="Emoji: Reißzwecke">incidence rate of reinfection was estimated at 0.36 (95% CI: 0.28-0.47) per 10,000 person-weeks.
4) overall, they conclude “SARS-CoV-2 reinfection can occur but is a rare phenomenon suggestive of a strong protective immunity against reinfection that lasts *for at least a few months post primary infection*.” https://www.medrxiv.org/content/10.1101/2020.08.24.20179457v2.full.pdf">https://www.medrxiv.org/content/1...
