Thing is
Those are two different things - the number of COVID cases reported are simply the number of people who are diagnosed - through whatever means.
However, the number of people infected with flu is far higher than the number who report their infection with flu.
So the denominator will be smaller in the case of COVID because they haven't done any random testing yet to discover how many people have had COVID but did not recognise/report it.
(, Mon 9 Mar 2020, 18:48, Reply)