Giving you the benefit of the doubt, and assuming this isn't just pedantry, especially since you're getting downvotes (because I assume everyone thinks this is just pedantic correction) I looked it up.
In the context of "trying to do research on coronaviruses" your comment appears to be not only correct but an important distinction, rather than the pedantry it appears to be.
From Wikipedia: "...more lethal varieties [of coronaviruses] can cause SARS, MERS, and COVID-19."
And...
"Severe acute respiratory syndrome coronavirus 2 [SARS-CoV-2] is the strain of coronavirus..."
Which can be further abbreviated as C19. I have seen this in personal chats and wonder how long it will be before it gets into newspaper headlines where space is at a premium in print editions.
In the context of "trying to do research on coronaviruses" your comment appears to be not only correct but an important distinction, rather than the pedantry it appears to be.
From Wikipedia: "...more lethal varieties [of coronaviruses] can cause SARS, MERS, and COVID-19."
And...
"Severe acute respiratory syndrome coronavirus 2 [SARS-CoV-2] is the strain of coronavirus..."
I learned something today!