I had an appointment with a substitute doctor this week. Attesting to his renown, his office walls were crowded with yearly awards demonstrating his leadership in his field. He is a hematologist/oncologist. I was there to receive one of the twice-yearly injections I receive for osteoporosis. The same medication is given in greater strength and frequency to cancer patients to prevent bone fractures. As he leaned forward to give me the injection, his mask was comfortably positioned beneath his nose. I was distressed by his apparent carelessness: the man deals with cancer patients all day long, for goodness sake.