Outbreak of Campylobacter infection among farm workers: an occupational hazard.

On 26 July, 1994, the local agricultural employment office notified the Wellington-Dufferin-Guelph Health Unit that a member of a work crew had suffered diarrheal illness following employment at a turkey farm on 18 July. The employment office also reported that two members from the same crew had been unable to work because of illness. Given this information, the Health Unit requested a list of all employees who had worked on the farm in order to investigate a possible outbreak.