twenty-eight infants and children hospitalized for severe shigellosis were treated orally either with ampicillin trihydrate ( 100 mg/kg/day administered in divided doses every six hours ) or with trimethoprim-sulfamethoxazole ( trimethoprim , 10 mg ; sulfamethoxazole , 50 mg/kg/day in divided doses every 12 hours ) for five days .
C0021270
infants
C0038689
sulfamethoxazole