hrmmn.
cynicism and stoicism are ideas that i sort of like, and sort of don't. i'll admit to having a tendency to romanticize poverty, and i certainly reject wealth, but i don't like the naturalistic fallacy. i also generally find myself weary of people arguing in favour of virtue, even as i try to strive for these things myself, for myself. my single biggest enemies in life are people that think they can tell me how to think correctly.
but, i'd actually imagine that cynics would be poor at spreading viruses due to their disinterest in people. viruses need to find more sociable people to infect, if they want to get around.
stoics would probably end up arguing that the virus is impossible, and only really exists in our minds, anyways. we'd certainly be unable to control it. stoicism is dangerous, but wise; be careful with that, as you can gain much from it, and be led much astray by it, too.
if they want to relate the spread of the virus to a school of greek philosophy, they should probably be more concerned with epicurean spreaders. it would be the epicureans that would be your social butterflies, your heavy drinkers, your pleasure-seekers and your utilitarian hedonists.
stoics may be a threat in theory, but nobody would like them in reality, so they wouldn't actually be. and, cynics would be more likely to go sit inside and read.