Its the way they classify covid death. If doctors suspect it us in anyway linked to covid, the just say it as it is.
Are insurance compensating hospitals based on number of covid deaths they certify? The numbers are too mind boggling.
The final case count can easily be calculated. All that you need to do is to take the country's population and multiply by 0.2 and that will give you a pretty accurate figure.
This is because 80% of most populations are immune.