evidence: Probably the most useful measure is the infection-fatality rate (IFR), which answers the question, "If I get sick, what is the chance that I will die?" The IFR is calculated by dividing the number of COVID deaths by the number of COVID infections: [...] Second, the IFR slowly increases with age through the 60-64 age group. But after that, beginning with the 65-69 age group, the IFR rises sharply. This group has an overall IFR just over 1% (or 1 death for every 100 infected). That's a fairly major risk of death. (The red line in the chart marks where the "1% threshold" is crossed.) The IFR then grows substantially and becomes quite scary for people in their 70s and older. People in the 75-79 age group have more than a 3% chance of dying if infected with coronavirus, while people aged 80 and over have more than an 8% chance of dying. That's roughly the same chance as rolling a four with two dice.