论文部分内容阅读
目的报道一起家禽感染H7N9禽流感的调查处置,初步评估H7N9可疑暴露人群的感染风险。方法通过查阅台账和现场访谈,追踪感染家禽来源与销售去向;采集涉疫市场外环境及可疑暴露人群咽拭子标本进行核酸检测。结果阳性的禽类来自于广东省某品牌鸡,共3间市场销售共同批次的鸡源。由阳性档口供货的市场共有5间。372份来自7个市场的外环境标本及178份可疑暴露者及禽类从业人员咽拭子标本均为H7N9禽流感病毒核酸阴性,80名可疑暴露者健康监测未出现病例。8个市场113名禽类从业人员接触禽类时戴口罩、戴手套、接触禽类后洗手的分别占30.1%(34/113)、13.3%(15/113)、73.5%(83/113)。应急监测期间,各级医院共采集44份发热肺炎病例及有禽类接触史流感样病例的咽拭子标本,结果均为阴性。结论在市场被H7N9禽流感病毒污染后,及时采取涉疫动物扑杀、市场休市、开展彻底的清洁消毒可以使H7N9禽流感病毒污染得到有效控制。
Objective To report the investigation and treatment of avian influenza A (H7N9) bird flu in poultry in order to assess the risk of infection in suspected H7N9 population. Methods Tracing the origin and sales of infected poultry by referring to the account books and on-site interviews, and collecting the throat swab specimens from the external market of the epidemic market and suspicious persons for nucleic acid detection. The result was that the birds were from a chicken brand in Guangdong Province and were sold in three batches in total. There are 5 markets available from the positive stalls. Thirty-seven samples of external environment from seven markets and 178 samples of suspected exposures and poultry from swine swabs were all negative for H7N9 avian influenza virus, and no surveillance of 80 suspicious persons was found. In the eight markets, 113 poultry workers wearing masks and gloves when in contact with poultry accounted for 30.1% (34/113), 13.3% (15/113) and 73.5% (83/113) of hands, respectively. During the emergency monitoring period, a total of 44 cases of fever pneumonia and some throat swab samples with history of bird flu exposure were collected at all levels of hospitals. The results were negative. Conclusions After the market was contaminated by the H7N9 bird flu virus, promptly took the culling of animals in an epidemic situation, the market was closed and thorough cleaning and disinfection could effectively control the H7N9 bird flu virus contamination.