240 BACTERIA, YEASTS, AND MOLDS 



vicinity of the patient are exposed to the disease by 

 breathing the air, while those at some distance are but 

 slightly exposed, and those at a greater distance not at all. 

 The danger is mostly confined to the room in which the 

 patient is kept, and hardly extends to the rest of the 

 household. The only protection against this method of 

 invasion, then, is to avoid the immediate vicinity of the 

 patient, and to keep the air of the room and the rest of 

 the house as fresh as possible. If one who is obliged to 

 breathe such air will take the opportunity frequently to 

 breathe fresh air out of doors, his danger will be reduced. 



