Abstract：ObjectiveWe aimed to examine the seroprevalence to H7N9 virus among poultry workers in Shenzhen and identify related risk factors.MethodsSubjects were recruited in poultry markets, and questionnaire was administered. Blood samples were taken for detecting antibody to novel influenza A H7N9 virus by using hemagglutination-inhibition test. Multivariate analysis was employed to identify risk factors related to H7N9 infection.Results250 subjects were recruited for serological survey with age median of 41,including 141 males and 109 females. 38 (15.2%) poultry workers had HI antibody titer≥1:160 to novel influenza A H7N9 virus, including 19 males and 19 females. Investigation showed that 236（94.4%）had exposure to chicken, 169（67.6%）had exposure to duck, 120（48.0%）had exposure to goose, 105（34.1%）had exposure to pigeon. In the univariate analysis, exposure to duck, goose and pigeon were identified as risk factors for H7N9 infection. In the multivariate analysis, exposure to duck(OR 3.85, 95%CI（1.44-10.35）, P=0.007)was identified as a risk factor for H7N9 virus infection, and other factors such as length of exposure to poultry, way of exposure and seasonal influenza vaccination were not identified to affect H7N9 infection significantly. ConclusionsThe comparatively high seropositivity to novel influenza A H7N9 virus among poultry workers in Shenzhen suggests that there are asymptomatic patientsin them.Exposure to duck is a risk factor for H7N9 virus infection.
唐秀娟,房师松,吕星,武伟华,彭博,王昕. 深圳市活禽市场活禽经营人员H7N9禽流感病毒抗体水平及感染危险因素调查[J]. 实用预防医学, 2015, 22(7): 809-811.
TANG Xiu-juan,FANG Shi-song,LU Xing,WU Wei-hua,PENG Bo,WANG Xin. A study on the seroprevalence to H7N9 avian influenza virus among poultry workers and risk factors for H7N9 infection in Shenzhen. , 2015, 22(7): 809-811.
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