Avian Flu Diary: MRC Report #34: COVID-19 Infection Fatality Ratio Estimates from Seroprevalence

In summary, we estimate that the overall COVID-19 IFR ranges from 0.14 – 0.42% in low income countries to 0.78 – 1.79% in high income countries, with the differences in those ranges reflecting the older demography of high income settings. The IFR is also likely to vary depending on available healthcare and underlying health conditions.

Our results suggest that the overall risk of death from COVID-19 doubles with approximately every eight years of age. Our estimates of the IFR of COVID-19 are consistent with early estimates and remain substantially higher than IFR estimates for seasonal influenza (<0.1% in the USA) 40 . 

Source: Avian Flu Diary: MRC Report #34: COVID-19 Infection Fatality Ratio Estimates from Seroprevalence