The CDC is updating their recommendations for healthcare providers several times a day. There's plenty of epidemiologists working on this topic in the us: shutting down airports and roads also kill people and it has varying effects depending on the point of the epidemic you are in.

I can't believe I'm saying this as a libertarian but you have to put some faith into the government's action here. The public in a panic already took away all the masks healthcare providers needed to safely attend patients, diminishing the capacity to serve.