How do doctors prevent themselves from being sick when they have to come in contact with sick peoples?

Question

How do doctors prevent themselves from being sick when they have to come in contact with sick peoples?

Answer 1

Doctors and nurses can also wear masks if they or the patient has a cold. Plus, they have to really keep themselves healthy by eating right, taking vitamins, etc. Everything we should be doing.

Answer 2

Doctors are very careful to wash their hands between patients and to NEVER touch their faces while working.