https://www.cdc.gov/coronaviru…-ccenarios-2021-03-19.pdf
Comparing these mortality figures with the Queensland ones:
Is very difficult! the age stratification is too coarse to fit an accurate exponential. We know that at very young ages IFR goes up.
Nevertheless we could take the average 0-19 year IFR has a lower bound for the age 18 IFR.
That gives 30 per 1,000,000 mortality rate.
Or, 3 deaths per 1,000,000. Not 0.0 deaths per 1,000,000.
note how this (approx but lower bound) estimate compares with my estimate above:
From the previous paper (eyeballing Fig 2) we have IFR approx 0.003% at age 18.
The same!
That gives me some confidence that the CDC is not lying to us about IFR, and the Queensland is using some not reasonable with COVID assumption about how many unvaccinated people catch COVID
One caveat I realise - maybe Queensland is just saying that the mRNA vaccines have muhc lower risks than the AsytraZeneca vaccine in this age group - so reckon the want them. That would be sensible, but then they would still not have 0.0 in the comparison - they would need the pericarditis mortality of the Pfizer vaccine (say).
But maybe that is 0.0 per 100,000 for age 18!
https://www.cdc.gov/mmwr/volum…eryName=USCDC_921-DM60791
Ok - so at age 18 that is say 6 : 1,000,000 myocarditis cases (taking an average of the 12-17 and 18-24 averages).
the CFR for this (better outcome than normal) type of myocarditis from a link we discussed earlier is < 10%.
So that is in fact 0.6 : 1,000,000 or 0.06 : 100,000. near enough to the Queensland 0.0 : 100,000
I am happy with these figures. They are all consistent, and also consistent with the published underlying data.
The Queensland figures make sense if they are arguing (correctly) that mRNA vaccines are a lot safer than Astrazeneca for this age group. Given than it should be possible to give people mRNA vaccines within a month or two, providing COVID rates are low enough for those unvaccinated waiting for mRNA not to get COVID - this is a correct decision.
But if the fraction of these unvaccinated 18 year olds he get COVID becomes higher over the time between now and when mRNA vaccines are available - then it will prove incorrect.
The argument with Queensland then is one about how quickly mRNA vaccination is possible and what the infection rate in Queensland will be over that period.
In the UK we know from government policy and modelling that most people unvaccinated will catch COVID over the next 3 months. So if there is not enough mRNA vaccine available age 18 should still take Astrazeneca. Nut - limited Pfizer doses should be directed to the younger age groups if possible.
THH
EDIT - i've just realised I was taking the much lower female statistics for myocarditis.
The male figure is 50 : 1,000,000. At 10% mortality that would be 0.5 (not 0.0) per 100,000. So the Queensland people are just wrong for males even if you reckon they are holding out for mRNA vaccination. Still that remains for them, with low infection rates if they have those, the right thing because the Pfizer risks are lower than the AstraZeneca risks for this age group.
Also, is 10% mortality correct? How many 18 year olds have died of vaccine-induced pericarditis in the US?
THH