A lot f the providers I know are living together to sharing expenses. They are waiting until May/June to see what the situation is. If it looks bad, then they may decide to go somewhere else. Either returning to China if possible. Or another city to loo for work. Some places will have recovered before NYC will.
It's half true. If they had the virus and recovered, they would be immune from catching it again. However, chances of them to have been infected early enough to recover is extremely slim. If they have it, it would be around now.