Wu Peng, Wang Liping, Cowling Benjamin J, Yu Jianxing, Fang Vicky J, Li Fu, Zeng Lingjia, Wu Joseph T, Li Zhongjie, Leung Gabriel M, Yu Hongjie
WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, Hong Kong, China.
Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China.
PLoS One. 2015 Sep 14;10(9):e0137831. doi: 10.1371/journal.pone.0137831. eCollection 2015.
The novel influenza A(H7N9) virus has caused 2013 spring and 2013-2014 winter waves of human infections since its first emergence in China in March 2013. Exposure to live poultry is a risk factor for H7N9 infection. Public psychobehavioral responses often change during progression of an epidemic.
We conducted population-based surveys in southern China to examine human exposure to live poultry, and population psychological response and behavioral changes in the two waves. In Guangzhou, an urban area of Guangdong province, we collected data using telephone surveys with random digit dialing in May-June 2013 and again in December 2013 to January 2014. In Zijin county, a rural area of the same province, we used door-to-door surveys under a stratified sampling design in July 2013 and again in December 2013 to January 2014. All responses were weighted by age and sex to the respective adult populations.
Around half of the urban respondents (53.8%) reported having visited LPMs in the previous year in the first survey, around double that reported in the second survey (27.7%). In the rural surveys, around half of the participants reported raising backyard poultry in the past year in the first survey, increasing to 83.2% participants in the second survey. One third of urban subjects supported the permanent closure of LPMs in the first and second surveys, and factors associated with support for closure included female sex, higher level of worry towards H7N9, and worry induced by a hypothetical influenza-like illness.
Our study indicated high human exposure to live poultry and low support for permanent closure of markets in both urban and rural residents regardless of increased worry during the epidemic.
新型甲型H7N9流感病毒自2013年3月在中国首次出现以来，已在2013年春季和2013 - 2014年冬季引发了多波人类感染。接触活禽是H7N9感染的一个风险因素。在疫情发展过程中，公众的心理行为反应往往会发生变化。
我们在中国南方进行了基于人群的调查，以研究人类接触活禽的情况，以及这两波疫情中人群的心理反应和行为变化。在广东省的城市地区广州，我们于2013年5 - 6月以及2013年12月至2014年1月通过随机数字拨号电话调查收集数据。在同一省份的农村地区紫金县，我们于2013年7月以及2013年12月至2014年1月采用分层抽样设计进行挨家挨户调查。所有回答均按年龄和性别加权至各自的成年人口。
在第一次调查中，约一半的城市受访者（53.8%）报告前一年去过活禽市场，这一比例约为第二次调查（27.7%）报告比例的两倍。在农村调查中，约一半的参与者在第一次调查中报告过去一年饲养过自家后院家禽，第二次调查中这一比例增至83.2%。在第一次和第二次调查中，三分之一的城市受访者支持永久关闭活禽市场，支持关闭的相关因素包括女性、对H7N9的更高担忧程度以及由假设的流感样疾病引发的担忧。
我们的研究表明，无论疫情期间担忧情绪增加，城乡居民接触活禽的比例都很高，对永久关闭市场的支持率较低。
