Of 250 attendees, 201 were reached and gave consent; 110 were cases and 91 non-cases. Among cases, 8% were 61 years old, and 80% were female. Top symptoms were fatigue (96%), abdominal pain (95%), diarrhea (95%), and fever (84%). Most cases developed symptoms within 24 hours of the event. Among cases, 75% (105/110) had eaten any chicken containing food vs 25% (55/91) non-cases (attack rate: 66%). Odds ratio for chicken containing foods was 7.8 for egg salad (95% confidence interval [CI]=4.1-14.4, p&amp;lt;0.01), 5.1 for grilled chicken (CI=2.8-9.4, p&amp;lt;0.01) and 3.9 for chicken salad (CI=2.2-7.1, p&amp;lt;0.01). Patients’ stool were not tested. Proteus vulgaris, Klebsiella spp., and Escherichia coli were detected in chicken samples. E. coli was detected in 3/32 environmental samples. 