Dr. Rutul Dalal, medical director, Infectious Diseases, UPMC Susquehanna, on life in the yellow zone, why the COVID numbers are low around here, the importance of wearing a face mask, and how much is too much hand washing, etc. Also, when a person comes in contact with the virus…what is the average timeline; when are they contagious? When would they test positive? When the fever? When should they consider going to ER, etc. etc.