Analysis of food-borne pathogens in Nantong City in 2017-2020 / 公共卫生与预防医学

ABSTRACT

Objective In order to understand the contamination status of food-borne pathogens in food in Nantong City, and to provide a scientific basis for food safety risk assessment and supervision. Methods The monitoring was performed according to the plan of food safety risk surveillance in Nantong City and the manual on monitoring microbes and its pathogenic factors in foodstuffs of Jiangsu Province. A total of 1025 food samples of 11 kinds were monitored from 2017 to 2020 for detecting of pathogenic bacteria such as Listeria monocytogenes, Salmonella, Vibrio parahaemolyticus, Bacillus cereus and Staphylococcus aureus, and the test results were summarized, analyzed and evaluated. Results A total of 142 pathogenic bacteria were detected, with a total positive rate of 13.85%. The detection rate was the highest in 2018 (25.65%), and the lowest in 2017 (4.98%). The highest detection rate was found in meat and meat products(25.38%), followed by aquatic products and animal products (17.92%), cooked rice and flour products around the school (14.29%), the detection rate of barreled drinking water was the lowest (2.86%). 170 strains of pathogenic bacteria were detected from 1025 samples. The higher positive rate was Bacillus cereus in the cooked rice flour products around the school, and 5 strains of Bacillus cereus were detected, with the detection rate was 14.29%. 18 strains of Staphylococcus aureus were detected in meat and meat products, and the detection rate was 13.85%; 70 Vibrio parahaemolyticus were detected in aquatic products, and the detection rate was 13.49%; 16 Listeria monocytogenes were detected in meat and meat products, and the detection rate was 12.31%. The positive rate of catering links is higher than that of circulation links, and the positive rate of urban areas is higher than that of rural areas. Conclusions Pathogenic bacteria were detected in different kinds of food, and the overall situation of food safety is stable. In the future, the monitoring scope will be expanded continuously, the monitoring continuity will be strengthened, the sampling quantity will be increased, the monitoring quality will be improved, the trend of food pollution change in the city shall be mastered in time, food safety warning shall be well done, and food safety education shall be strengthened for food practitioners, food pollution risk shall be reduced and food safety shall be effectively guaranteed.