But how do we know it is 20%? If R0 is higher than we think due to asymptomatic spreading, then we likely aren’t counting all the asymptomatic cases. If we did,

But how do we know it is 20%? If R0 is higher than we think due to asymptomatic spreading, then we likely aren’t counting all the asymptomatic cases. If we did, it would result in a lower serious complication rate. That’s why I said it can’t be both.