Not long ago , I got an X - ray of my lungs and the doctor saw some strange pattern . Then he asked me if I grew up in the coutry side . After seeing some concern in my face , he told me that there 's some bacteria that comes from birds and it 's common in farmers .

Give answer the following question using evidence from the above passage: What did the doctor do after explaining the problem to the narrator ?
The doctor prescribed an antibiotic to clean up the bacteria in his lungs .