| shigellosis at a caribbean resort. hamburger and north american origin as risk factors. | during a three-week period in 1984, 339 tourists and expatriate employees with diarrhea visited the infirmary at a caribbean resort club. epidemiologic studies suggested that over 60% of the 1,893 tourists at the resort club during that time may have been ill. shigella flexneri 4a was isolated from seven of 18 stool specimens. a few cases of diarrheal illness occurred at the resort club before the onset of the outbreak, which was temporally related to illness in a butcher. north american residen ... | 1987 | 3318410 |