Covid 19 stats website.

If they are there, then it must be from corona.
Many times it is, however if you are not obviously ill they will send you home, at least from some hospitals. They know you will be back.
Frequent flyers are all but a thing from the past.

As a side note, apparently the flu season which normally would be going on during this period has sort of died out. Early, like the end of Feb. Due to lockdown they figure. It doesn't get passed so easy I guess.