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目的探讨河北省首例人感染H7N9禽流感病例的可能暴露危险因素及防控策略。方法描述流行病学研究方法。结果廊坊市共报告1例人感染H7N9禽流感确诊病例,安次区XX菜市场1处污水H7N9禽流感病毒核酸检测阳性,6名可疑暴露人员咽拭子标本H7N9禽流感病毒核酸检测阴性,175份禽类标本检测结果均为阴性。结论本次疫情的发生证实新型H7N9禽流感已在廊坊市家禽间存在并传播到人。在活禽宰杀市场,野鸟和家禽存在密切接触,受感染野禽排出的粪便会导致家禽的感染,可造成新型H7N9病毒的传播。在活禽市场环境接触禽类具有更高风险,前往活禽市场但无禽类接触同样具有危险。关闭市城区活禽宰杀市场,推行“禽类定点屠宰、白条禽上市”制度将大大降低疫情发生的风险。
Objective To explore the possible risk factors and control strategies of the first human case of H7N9 avian influenza infection in Hebei Province. Methods Describe methods of epidemiology. Results A total of 1 confirmed human case of H7N9 avian influenza was reported in Langfang City, 1 was detected in XX sewage market in Anji District, and 6 samples of suspected swine H7N9 were negative for nucleic acid detection of H7N9 avian influenza virus. Poultry specimens were negative test results. Conclusion The outbreak of this outbreak confirmed that the new H7N9 bird flu has existed in poultry in Langfang City and spread to people. In live-slaughter markets, there is close contact between wild birds and poultry, and excrement from infected wild birds can lead to poultry infections that can cause the spread of the new H7N9 virus. Exposure to poultry in the live poultry market is at a higher risk and access to the live poultry market without poultry exposure is equally dangerous. Close the livelihood slaughter market in the urban area of the city, the implementation of “poultry slaughtering, white poultry market ” system will greatly reduce the risk of the outbreak.