In July 1996, an outbreak of Escherichia coli O157:H7 infection occurred among schoolchildren in Sakai City, Osaka, Japan. This outbreak developed in 13 North-East District and 34 Middle-South District elementary schools in the city. All children hospitalized on July 17-19 had presented on July 8 (North-East District) and July 9 (Middle-South District). School lunches served on July 1 and 8 in the North-East District and on July 1, 4, 8, and 9 in the Middle-South District were proposed by a food consumption study to be associated with infection. White radish sprouts from a single farm were the only uncooked food common to the most highly implicated meals on the involved days in two school districts (sweet and sour chicken with lettuce on July 8 in the North-East District and chilled Japanese noodles on July 9 in the Middle-South District). Two incidents of E. coli O157:H7 in neighboring areas were also related to white radish sprouts from the farm. The pulse-field gel electrophoresis patterns of isolates from patients in these two districts and the neighboring areas were identical. Thus, it was concluded that the cause of the outbreak was the white radish sprouts shipped on July 7-9 from one particular farm.
We reviewed records of all outbreaks of food-borne illnesses due to schoollunch in Japan from 1987 through 1996 to determine the risk factors causing these outbreaks. Major hazards in 269 outbreaks were Salmonella spp., Campylobacter jejuni, Escherichia coli and Staphylococcus aureus. Foods including uncooked or partially cooked items, salad or egg products presented a high risk in 62 outbreaks with confirmed food sources. Contaminated food items were involved in 29 incidents (46.8%); storage of foods for an extended period before serving in 29 incidents (46.8%), inadequate cooking and cross contamination in 21 incidents (33.9%) each; infected employees in nine incidents (14.5%).
The Veterinary Services of the Republic of Korea and Japan are reviewed and summarised. To cope with ever-increasing demands on Veterinary Services, both countries have made continued efforts to expand the services, which currently only have a limited number of government personnel. To overcome some of the problems associated with international trade, e.g. outbreaks of foot and mouth disease and classical swine fever (hog cholera), the authorities of the Republic of Korea are considering strengthening quarantine services by combining the National Veterinary Research and Quarantine Service and the National Plant Quarantine Service of the Ministry of Agriculture and Forestry (MAF). In the field of veterinary public health services, the Republic of Korea and Japan have different organisational structures. All Veterinary Services, including veterinary public health, are kept within the MAF in the Republic of Korea, whereas in Japan, the Ministry of Agriculture, Forestry and Fisheries (MAFF) deals with general animal production and health services and the Ministry of Health, Labour and Welfare (MHLW) deals with the safety of animal products, food poisoning and the prevention/control of zoonoses, such as rabies and Q fever. In Japan, after the occurrence of bovine spongiform encephalopathy in 2001, the authorities undertook a thorough review of the Veterinary Services, focusing particularly on food safety. A reorganisation of the administrative structure was proposed, and will be completed by the end of 2003. Subject to the approval of the Diet (House of Councillors), an independent 'Food Safety Commission' will be created within the cabinet office which will undertake risk analyses related to foods, and risk management will be carried out by the relevant ministry, i.e. the MAFF or the MHLW. The Animal Health Division of the MAFF will also be moved from the Livestock Industry Department to a new 'Consumer Safety Department' of the MAFF, where additional responsibilities in fish health control and feed safety control will be assumed.