Hello friend, the truth is that this virus has taken us all by surprise and today there is talk about its mutations, it is a difficult situation because as you say it worsens the whole picture and the vaccine that is already established would be useless. I think it is a very difficult situation for the health profession and also people do not do their part, they do not take care of themselves or others, so it is much more difficult to fight any disease. Greetings!