initial therapy was ampicillin or amoxicillin ( 31 ) , trimethoprim-sulfamethoxazole ( 5 ) , erythromycin and sulfisoxazole ( 5 ) , erythromycin ( 1 ) , and ampicillin and gentamicin ( 1 ) .
C0002645
amoxicillin
C0002680
ampicillin