GLG
Well-Known Member
What do you mean "what it means on the population"? The IFR is the proportion of infected people who die, adjusted for risk factors like age. It's relevant for infected people, not the population. If you have an estimate of the proportion of a population that will be infected you can multiply it by the IFR to get an estimate of the proportion of he population that will die. But estimating the proportion that will be infected seems difficult given all the asymptomatic cases.
P.S. I guess the "lone scientist" you are referring to is John Ionnidis. He has a habit of being provocative, like his paper “Why most published research findings are false”, but he is quite well respected in health research. He seems a little out of step with the rest of the field in this case, but that doesn't mean he's wrong.
My understanding is that IFR is the proportion who die when all those factors are taken into account until the population reaches herd immunity and the virus burns out. That's why you can use that number on a population that has no immunity to this new virus. Good reason why a vaccine is so important and we need to buy as much time as we can until then. There is a working paper that has taken a stab at calculating IFR.
https://www.cgdev.org/publication/p...-sex-comorbidities-and-health-system-capacity
I will see if I can find an official definition of IFR and post it here. WHO says what you said.
"IFR, the portion of all of those infected who die"
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