Coronavirus is a family of viruses. Common cold, SARS, MERS, COVID19-SARS-2 are all coronavirus. There are strains of that effect humans and some that effect different animals.
Nittany, Covid-19 and Coronavirus are the same thing, in the context of what your read and hear about the current worldwide medical situation. Also, Covid-19 is NOT the 19th virus in this family of viruses. The number 19 is an identifying number to indicate that it was the strain identified in 2019.
SARS-CoV-2 is the virus that causes Covid-19. If you get infected with the virus, then you might come down with a case of Covid-19. Kinda same way HIV is the virus that causes AIDS. Make more sense now?
I'm guessing, the attendance at Sturgis will be closer to 500,000 than 250,000. And more attendees will die on the road to and fro than from the post rally virus.