The biggest winners from coronavirus are going to be those who sell fear (i.e., mainstream media). I also suppose anyone who was astute enough to open a large short position against the market in the past week or two will profit. I think we're only going to see an increase in panic and fear before things settle down. What real impact there will be on the world remains to be seen, I think it's too early to tell.
Worst case, it seems like the virus will mostly harm those who are at risk of death, but healthy people will probably be okay.