I posted a story a few weeks ago about this and here is a new one. THis could also answer the question above as to why the EU has less cases than we do now. The virus was there first, so if this hold true, it not only explains the lower mortality rate here now, but also tells us we will soon have less cases as well...
https://www.foxnews.com/world/italian-doctor-says-coronavirus-weakening-may-disappear-on-its-own-report