Knowing the fatality rate requires knowing the number of people infected: we all know the figures we currently have are mostly a low estimate for a number of re

Knowing the fatality rate requires knowing the number of people infected: we all know the figures we currently have are mostly a low estimate for a number of reasons already discussed at length. We must also know the number of fatalities, and this will only be known after the epidemic once we calculate the over-mortality compared to a normal year. So the current numbers are a low estimate too. In the end we can tell nothing about the fatality rate which is the ratio of those values. Hence governments make a guess and act accordingly. Only those who test large scale and isolate only positive people act rationally.