Surveillance on food-borne pathogens in food in Nanjing city from 2007 to 2010

Objective:To investigate the situations and levels of main food-borne pathogens bacteria in food in Nanjing city and to provide scientific basis for prevention and control of food-borne diseases.Methods: From 2007 to 2010,459 retail food samples were collected and analyzed for the occurrence of Salmonella,Listeria monocytogenes,Escherichia coli O157∶H7,Staphylococcus aureus,Campylobacter and Vibrio parahaemolyticus.Results: Among all samples,61 pathogenic strains were isolated and the overall positive rate were 13.3%.The positive rate of food-borne pathogens bacteria from 2007 to 2010 were 25.3%,21.3%,7.9%and 6.9% respectively.The positive rate in raw meat,quick-frozen flour and rice products,aquatic products,cooked meat and Chinese cold dishes were 45.8%,24%,14.1%,13.3% and 5.9% respectively.Conclusion: The results showed that Salmonella and Listeria monocytogenes widely existed in foods in Nanjing city.Raw meat,quick-frozen flour and rice products and cooked meats were the higher risk foods to cause food-borne diseases.