IFR of 1.29% predicted using information from Italy, ranging from 0.05% to 0.2% for those under 60. This runs the gamut from worse than a flu to as bad as three epidemic flus in one, or twice the CFR’s for both the Asian and Hong Kong pandemic flus.
This falls in line with the New York City antibody tests and what I believe we’ll see following the Stockholm antibody tests, as well as my prediction of 0.8-1.2%, although slightly higher by 0.09%.
It also rules out under a 0.5% IFR for any country with over 30% 60+ citizen share. Sweden’s share is around 25%, ruling out under a 0.4% IFR, which should have been obvious by this point.
The IFR for those 60+ is 4.25%. 4.66% for the 70-80 age range and around 9% for the 80+.
Their 95% confidence interval for the overall IFR is 0.89% - 2~%.
Using their IFR, we can calculate our best case scenario (no hospital collapse to raise the IFR) using different herd immunity estimates.
1.29% IFR:
50% = 66,200 deaths
60% = 80,000 deaths
70% = 93,200 deaths
82% = 109,300 deaths
My closing thoughts would be that it’s time for people to stop the flu comparisons. NYC antibody testing reveals a similar IFR and when the Stockholm antibody testing matches the death rate (assuming IgG antibodies, delay to death rate considered longer for other antibodies) I imagine we’ll see similar results here. We have a high base IFR with the possibility of raising drastically depending on the stress our hospitals are under and the grade of collapse they suffer.
link to the study