… kill around 2% of those known to be infected, but this “case fatality rate” is grossly misleading. A large yet unknown number of people have had the disease with mild or no symptoms and were never diagnosed, so the actual “death rate,” when calculated using the true total case count, is lower; the case fatality rate varies dramatically by age — around 0.01% at age 25 and 15% at age 85, according to one study.
