of therapy appears to be superior to single-dose or 3-day therapy
( 125 ). With increasing resistance to ampicillin and trimethoprim/
sulfamethoxazole, azithromycin has been the treatment of choice
( 133,134 ). Recently, however, Shigella sonnei has been found to
have reduced susceptibility to azithromycin among isolates in the
United States ( 61 ).