DURING April and May 1997, CDC received reports of clusters of cases of cyclosporiasis in the United States.1 This report describes the preliminary findings of an investigation of an outbreak in New York and summarizes the findings from ongoing investigations in other states.
On May 15, the Westchester County Health Department was notified of two laboratory-confirmed cases of cyclosporiasis and other cases of diarrheal illness among persons who attended a wedding reception on April 20 at a private residence in the county. A case of cyclosporiasis was defined as onset of diarrhea (three or more loose stools during a 24-hour period) 1-14 days after the reception. Of the 183 persons who attended the reception, 154 (84%) were interviewed, and 140 were included in this analysis (persons who had loose stools that did not meet the case definition were excluded). Of the 140 persons, 20 (14%)
Update: Outbreaks of Cyclosporiasis— United States, 1997. JAMA. 1997;277(23):1838. doi:10.1001/jama.1997.03540470020008