“If you are trying to establish how lethal buses are you cannot simply count every single person knocked over, you need to know on which occasions the bus was actually at fault.”
Yes, but before you get to that step you need to know all fatalities in which a bus was involved.
It is a good example because it is precisely this kind of evaluation that has led to seat-belts, side impact beams, laminated windscreens, anti-lock brakes, crumple zones and a host of other safety features on modern vehicles.
The point I am trying to make about death certificates is that covid 19 won’t appear on it unless it directly caused death or played a significant role in contributing to the actual cause of death as it is worded in the death certificate.