This is simply not true
Yes, it is.
I asked 5 Roshei Chaburah in Beis Yitzchok today if anyone in their respective Chaburos has been sick with Corona in the last few months. They all said no.
I then asked them if they know of anyone in the Beis Medrash who has had it in the last few months. They all said no.
FYI, Beis Yitzchok has about 750 people learning there all day.
This needs to be studied. We are definitely hearing too much of one side only.