Clinico-epidemiological picture of the outbreak gives a clue to its aetiology. Dirrhoea with or without abdominal cramps is a presenting feature of food poisoning due to Salmonella spp, Campylobacter jejuni, Clostridium perfringens, and diarrhoeal form of Bacillus cereus. But fever, seen in 96.2 % of cases in the present outbreak, is characteristically seen only in Salmonella food poisoning