No way, no reason to feel bad about that. Especially when this whole thing is contrived. We can pray for the sick and grieve for the dying but no reason to feel badly about the bad guys machinations not working on us.
I did have it, but not bad, so I don't even consider myself having it, so many were a lot worse off than I and I thank the Lord for the health he has given me. I don't understand why anyone would feel guilty for not catching it, good health is a gift from the Lord.