Abstract
From 1998 to 2001, the patients suffered from food poising by bacteria was 74.6%, and the pathogenic Escherichia coli occupied 9.4% of them in Japan. In our group home built near the Showa hospital, pathogenic Escherichia coli O25, O86a, O8, O1, O18, and O26 were found in the stools of residents. Escherichia coli O1, O18, and O26 found in the each 3 worker. Diarrheagenic O25, O86a, O1, and O18 had no infection from patients to other residents. O86a, O25, O1,O18, and O26 produced no verocytotoxin. Most of them no detected after treatment with antibiotics and bifidobacterium, except 84 years female feces showed that the infected strains changed by medication of antibiotics from MRSA, O25, O86a, O8, MRSA, and disappeared. Effective procedure taken were thorough washing of hands, cooking by heat, and isolation of sever and complex case of the 84 years female.
