Of the 146 Shigella strains isolated during the surveillance period, 22 (15%) were S. flexneri and the others were S. sonnei. No S. dysenteriae or S. boydii strains were detected. Of the 22 S. flexneri isolates, the three most frequently encountered serotypes were 2a (36%), 1b (23%) and 3b (28%). Of 124 S. sonnei isolates tested, 111 (90%) were resistant to tetracycline, 94% to co-trimoxazole (trimethoprim –sulfamethoxazole), 6% to ampicillin, and 2% to chloramphenicol. Of the S. flexneri