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首页> 外文期刊>Journal of infection and public health. >Epidemiological analysis of norovirus infectious diarrhea outbreaks in Chongqing, China, from 2011 to 2016
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Epidemiological analysis of norovirus infectious diarrhea outbreaks in Chongqing, China, from 2011 to 2016

机译：中国重庆市诺洛病毒感染性腹泻疫情的流行病学分析从2011年到2016年

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Objective We investigated the epidemiological characteristics of norovirus infection from 2011 to 2016 in Chongqing, China, in order to provide evidence for strategies on epidemic prevention and control. Methods We collected data on norovirus infectious diarrhea epidemics in 38 districts and counties, and analyzed the information using descriptive epidemiological methods. Results In 2011, the first case of norovirus infectious diarrhea in Chongqing was reported. From 2011 to 2015, 38 districts and counties in Chongqing reported a total of 4 epidemics. In 2016, however, the city reported 117 outbreaks. From 2011 to 2016, there were 1637 cases of norovirus infection but no deaths. In 2016, most outbreaks occurred over a 5-month period with a clear peak in December and higher incidence in major urban areas than smaller communities (83.61% vs. 16.39%). Of these 1637 cases, 99.18% occurred in urban schools and nurseries, and 80% were transmitted person-to-person. Infection by genogroup II genotype 2 (GII.2) viruses accounted for 98.71% of cases. Leukocytes were increased in 67.81% of patients, neutrophils in 65%, and lymphocytes in 50%. Medical treatment was sought by 70% of patients or guardians but only 3.66% of cases were hospitalized. The most frequent misdiagnosis was "suspected food poisoning". Conclusion The frequency of norovirus infectious diarrhea epidemics increased over 20-fold from 2011 to 2016 in Chongqing, China. These epidemics occurred predominantly in urban schools and nurseries. However, epidemics showed little spread to outlying districts and counties, so prevention and control pressures were relatively high. Suggestions Healthcare professionals and institutions should strengthen health education for groups at high-risk of norovirus infection, such as school children, and increase norovirus testing capacity to further improve emergency investigation. Prevention and control knowledge should be disseminated to the general public to reduce transmission risk and total disease burden. Finally, governments and health administrative departments should invest special funds to prevent and control norovirus epidemics.
机译：目的我们研究了2011年至2016年在中国重庆诺洛病毒感染的流行病学特征，以便为防疫和控制策略提供证据。方法我们在38个地区和县中收集了诺罗病毒传染性腹泻流行病的数据，并使用描述性流行病学方法分析了信息。结果2011年，报告了重庆诺罗病毒感染性腹泻的第一种情况。从2011年到2015年，重庆市38个区和县报告了4个流行病。然而，2016年，该市报告了117次爆发。从2011年到2016年，有1637例诺罗病毒感染病例，但没有死亡。 2016年，大多数爆发发生在5个月内，12月份的晴朗峰值明显，主要城市地区的发病率高于较小的社区（83.61％与16.39％）。在这1637例之前，城市学校和托儿所发生99.18％，80％的人被传送到人。受基因群II基因型2（GII.2）病毒的感染占98.71％的病例。白细胞在67.81％的患者中增加，中性粒细胞65％，淋巴细胞50％。患者或监护人的70％征求医疗，但只住院了3.66％的病例。最常见的误诊是“疑似食物中毒”。结论诺罗病毒感染性腹泻流行病的频率在2011年至2016年在中国重庆增加了20倍。这些流行病主要发生在城市学校和托儿所。然而，流行病表现出很少蔓延到外围地区和县，因此预防和控制压力比较高。建议医疗保健专业人士和机构应加强对诺罗维病毒感染等群体的健康教育，例如学童，并增加诺罗维病毒检测能力，以进一步改善紧急调查。预防和控制知识应向公众传播，以降低传播风险和疾病总疾病负担。最后，政府和卫生行政部门应投资特别资金来预防和控制诺罗维病毒流行病。

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