[Campylobacter].

Campylobacter bacterial infection is the second most cause of food poisoning in Japan. Patients are often found in outpatient clinic with symptom of severe diarrhea. The common risk factor of Campylobacter infection is reported to be half-backed chicken intake. Because incubation period is reported to be 2-7 days, it is often difficult to identify the causative food. Macrolide is the first choice of medicine when the patient has severe symptom. Some patients develop Guillain-Barré syndrome(G-B syndrome) 2-3 weeks after Campylobacter infection. It is said that 30% of G-B syndrome patients have Campylobacter infection before they develop G-B syndrome.