frankv: Death rate increase could also be the hospitals and ICUs and ventilators getting overwhelmed. So death rate starting to move from 1% to 5%. That would have less lag than pre-swamping, since it would be on arrival at ICU, not weeks after.
I saw that in one graph of... somewhere in NYC [citation needed] where the infection rate and death rate more or less tracked each other and then at a certain point there was a sharp increase in deaths (relative to infections) which presumably was when the ICUs got overwhelmed.



