DEAR DOCTOR K: In a recent column on antibiotics, you didn't mention their use in meat and poultry as a cause of antibiotic resistance. Hasn't this contributed to the problem?
DEAR READER: You're correct. In the United States, food-producing animals such as cattle and poultry are regularly treated with antibiotics. This has contributed to antibiotic resistance: bacteria that are no longer susceptible to antibiotics. How do bacteria become resistant? Let's say you take penicillin to treat a bacterial infection.