[neetdeth]

I think so. How many people fall ill as a result of attending any given large conference? Probably hundreds -- but conference organizers have never been considered liable for this. If the coronavirus phenomenon shifts liability in the popular perception, there's no way you can afford the PR risk of hosting a major gathering.

[bobthepanda]

Not to mention, lawsuits and insurance coverage.

You'd be a fool to insure someone against coronavirus-related liability for an upcoming event.