INFECTION FATALITY RATE

The infection fatality rate (IFR), a term often confused with CFR, is the ratio of number of deaths that occur from a disease to the total number of infected people. Since the CFR requires cases to be confirmed (generally by nucleic acid tests), it is generally significantly higher than the IFR, which would include asymptomatic or unconfirmed cases of infections. Scientists at the Oxford University’s Centre for Evidence-Based Medicine estimate the IFR of Covid-19 to be between 0.1% and 0.26%.