Bacteriological investigation of an outbreak of Clostridium perfringens food poisoning caused by Japanese food without animal protein
1999
Miwa, N. | Masuda, T. | Terai, K. | Kawamura, A. | Otani, K. | Miyamoto, H.
An outbreak of Clostridium perfringens food poisoning occurred in a senior citizen's home in Japan. Japanese food, spinach boiled with fried bean curd, was considered to be the causative food as a result of the detection of the C. perfringens enterotoxin gene by nested PCR. The number of enterotoxin-positive C. perfringens was enumerated as 4.3 X 10(5)/g in the causative food by the MPN method combined with nested PCR. By cultivation, enterotoxin-positive C. perfringens was isolated from all the fecal specimens of patients tested and the causative food. The isolates from patients were serotypable, heat-resistant and the majority produced enterotoxin, however most isolates from the causative food were nonserotypable, enterotoxin-negative and heat-sensitive.
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