I'm surprised it took this long, but there is now an official "coronavirus mod" for Fallout: New Vegas, released by modder 'JotunYmir' and available right here.
The mod is called Immersive Coronavirus, and will see Fallout: New Vegas players needing to eat some Bat Soup to contract COVID-19 coronavirus. There's not much more to go along with the mod, as once you have it you simply need to survive it -- which isn't that hard by the looks of things.
I would rather see the infection of coronavirus changing the way you interact with the world at least, as it seems like a waste to be (what seems) the first "coronavirus mod" for a game. I'm sure Resident Evil is next, though.
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