Interesting. If London's seroprevalence is 17%, with a population of 8.9 million and 7,758 #COVID19 deaths today implies an IFR in London of ~0.51%https://twitter.com/onisillos/status/1263541718407876610 …
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Very true. I suspect the IFRs calculated using official death tolls will generally be an underestimate - in some ways this is the biggest weakness of seroprevalence studies that do not use a model to estimate IFR