Jesus did say to visit the sick. (Mathew25)
However I would like to make a few points. One is that the corona virus is highly contagious. If you were to meet someone who is contagious, you would almost certainly get it and become infected. And if you went to visit someone else who wasn't infected yet, they could catch it and possibly die themselves. Yes Jesus did heal those with leprosy and a fever. But leprosy isn't actually that infectious. You would have to meet someone who has it multiple times in order to be at risk of getting it. The corona virus on the other hand would infect you pretty much the first go. Then if that happened you would become a danger to everyone you meet. Now granted, if you wanted to help at the hospitals and spend your time with people who are already sick and you feel like God is telling you to do it. Then by all means do it. The doctors and nurses are doing just that. But this is a case where staying away from people is more helpful than visiting them. And ask yourself, are you doing it to do God's will? Or because of your religious pride? If you just assume that God is going to give you divine protection and therefore you don't need to take extreme precautions, then you'll be more of a danger to people and yourself than any help.