1983 Volume 57 Issue 7 Pages 576-586
From 1979 through 1981, there were 15 outbreaks of campylobacter enteritis, involving 858 patients in Tokyo. Ten out of 15 outbreaks were found between May and September, and 5 outbreaks were in the winter. Places of the occurrence were at hotel (8 outbreaks), domitory of university or company (3), nursery school, orphan asylum, family and restaurant.
Major symptoms observed in 849 patients were diarrhea (84.1%), abdominal pain (74.1%), fever (48.2%), headache (30.0%), nausea (31.1%) and vomiting (9.4%). In only two outbreaks, the vehicles for transmission were confirmed. They were implicated raw clam in outbreak number 2 and chicken meat in outbreak number 9. The period of incubation time based on the time of consumption of the raw clam was 20-60 hours (geometric average 30 hours) and in outbreak number 9 was 20-104 hours (geometric average 49 hours). In the other outbreaks the incriminated food, source and route of contamination could not be demonstrated.
Campylobacter jejuni was isolated 278 (44.1%) of 630 feces obtained from patients of 15 outbreaks. In outbreak number 15, C. jejuni was detected in 26 of 30 patients, and enteropathogenic Escherichia coli 0111: K58 was also detected in 9 cases.
By our provisional serotyping schema, 295 (94.2%) of 313 cultures tested were typable. Twelve serotypes were identified from the 15 outbreaks with one involving two different serotypes. In outbreak number 9, the vehicle was able to be traced by serotyping the siolates.
Antibody response was variable as determined by the agglutination titer against the homologous isolate. In only one of 7 outbreaks investigated, a response was demonstrated.