So how did Cain know to mention the coronavirus if this was filmed months ago. Well, for one thing, coronaviruses are a kind of virus. The COVID-19 virus is just a kind of coronavirus, not the only coronavirus. In fact, SARS, which we experienced a violent outbreak of in the early 2000s, is another coronavirus. Also, as a side note, the superbug on The Resident is a deadly fungus, not a virus.