上海市某区生菜中阪崎克罗诺杆菌的半定量风险评估

Semi-quantitative risk assessment of Cronobacter sakazakii in lettuce in a district of Shanghai

为了评估上海市某区居民通过生菜暴露阪崎克罗诺杆菌(Cronobacter sakazakii)的健康风险,本文按照微生物风险评估的程序,应用半定量风险评估工具Risk Ranger和sQMRA软件,结合居民膳食消费量数据进行评估。预计上海市某区健康成人每人每天因进食污染了阪崎克罗诺杆菌的生菜而患病的概率为1.66×10^(-9),每年发病7.63×10^(-3)例,风险系数为9,健康成人的发病概率很低。说明上海市某区即食生菜中阪崎克罗诺杆菌危害为低风险,可维持现有风险控制措施,但需严格执行生产过程风险监测,制定安全事件发生应急预案,并加强对消费者家庭食品安全的科普宣传。本研究为生菜中致病微生物风险评估补充数据,可供定量风险评估和食源性疾病的防控提供科学参考。

The contamination status of Cronobacter sakazakii(C.sakazakii)microorganisms in lettuce in a district of Shanghai was evaluated,according to the procedure of microbial risk assessment(MRA),using the semi-quantitative microbial risk assessment software Risk Ranger and sQMRA,along with residents′dietary consumption data.Based on our research conducted for this district of Shanghai,the probability of getting sick from eating lettuce contaminated with C.sakazakii for a healthy adult was 1.66×10^(-9) per day,and 7.63×10^(-3) cases per year,with a risk coefficient of 9.More importantly,our analysis showed a very low probability of morbidity and death.Despite the low risk for C.sakazakii in ready-to-eat lettuce,the current risk management measures are still required to maintain this excellent status for lettuce.This study provided important data for risk assessment of pathogenic microorganisms in lettuce,which could be beneficial for quantitative risk assessment,as well as the prevention and control of foodborne diseases.