| a common-source outbreak of shigellosis involving a piped public water supply in northern thai communities. | we report an epidemiological investigation of an explosive common-source water-borne shigellosis outbreak traced to a piped public water system in northern thai communities. in august 1991, 242 cases of acute diarrhoeal illness occurred in sam ngao subdistrict, tak province. about 30% of the cases were culture-positive for multiresistant shigella flexneri 2a. the outbreak affected all age groups, with the highest attack rate (9.4%) in children < 5 years old. the first ten cases occurred during 1 ... | 1995 | 7783269 |