目的分析大连市食源性疾病监测哨点诺如病毒的感染状况,为食源性疾病防控提供科学依据。方法 2015年5~12月对大连市10家食源性疾病监测哨点医院采集的1 253份标本进行诺如病毒荧光定量RT-PCR核酸检测。结果检测1 253份标本,诺如病毒核酸阳性24份,阳性率为1.92%,GⅠ型和GⅡ阳性率分别为0.32%和1.60%。男性阳性率(1.49%)低于女性(2.33%)(P>0.05)。第四季度阳性率最高为4.58%,≤9岁儿童阳性率最高为5.19%。可疑原因食品中,食用蛋与蛋制品和豆类及制品的病例阳性率较高,分别为10.00%和10.53%。可疑进食场所中,在食品店、食堂、酒店进食的病例阳性率较高,分别为5.56%、5.26%和5.21%。结论大连市食源性疾病中存在GⅠ型和GⅡ型诺如病毒感染,以GⅡ型感染为主。 Objective To analyze the status of norovirus infection in foodborne disease surveillance in Dalian, and provide a scientific basis for the prevention and control of foodborne diseases. Methods From January to December 2015, 1 253 specimens collected from 10 foodborne disease surveillance sentinel hospitals in Dalian were detected by Norovirus RT-PCR. RESULTS: A total of 2425 samples were positive for Norovirus and the positive rate was 1.92%. The positive rates of GⅠ and GⅡ were 0.32% and 1.60% respectively. The positive rate of males (1.49%) was lower than that of females (2.33%) (P> 0.05). The highest positive rate in the fourth quarter was 4.58%, and the highest positive rate in children ≤9 years old was 5.19%. Suspected cause of food, edible eggs and egg products and beans and products of the positive rate was higher, respectively, 10.00% and 10.53%. Among the suspicious eating places, the positive rates of eating in food stores, canteens and hotels were high, accounting for 5.56%, 5.26% and 5.21% respectively. Conclusion There are GⅠ and GⅡ Norovirus infections in food-borne diseases in Dalian.