More on "This is NOT the black plague returned,

and people need to calm the hell down."
To a trained epidemiologist, however, this case fatality rate is obviously a significant overestimation of the actual fatality rate from SARS-CoV-2, which causes COVID-19.
Lots more detail at the link.

I would add that, along with calming down, a bunch of politicians need to be stopped from wasting more oxygen.