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Volume 20, Number 8—August 2014
Research

Human Exposure to Live Poultry and Psychological and Behavioral Responses to Influenza A(H7N9), China

Liping Wang1, Benjamin J. Cowling1, Peng Wu1, Jianxing Yu1, Fu Li, Lingjia Zeng, Joseph T. Wu, Zhongjie Li, Gabriel M. Leung, and Hongjie YuComments to Author 
Author affiliations: Division of Infectious Disease, Key Laboratory of Surveillance and Early-warning on Infectious Disease, Chinese Center for Disease Control and Prevention, Beijing, China (L. Wang, J. Yu, F. Li, L. Zeng, Z. Li, H. Yu); Division of Epidemiology and Biostatistics, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China (B.J. Cowling, P. Wu, J.T. Wu, G.M. Leung)

Main Article

Table 2

Exposure to live poultry and attitudes toward closure of LPMs among participants recruited in urban areas for surveys related to influenza A(H7N9) awareness, by area, China, 2013*

Exposure No. (%) persons
p value
Chengdu, n = 500 Guangzhou, n = 500 Shanghai, n = 500 Shenyang, n = 504 Wuhan, n = 500
Frequency of LPM visits in the previous year <0.001
>1
183 (36.6)
237 (47.4)
161 (32.2)
97 (19.2)
151 (30.2)

No. live poultry bought in the previous year† <0.001
1–2/y 33 (18.0) 32 (13.5) 25 (15.5) 35 (36.1) 25 (16.6)
3–5/y 31 (16.9) 27 (11.4) 30 (18.6) 23 (23.7) 28 (18.5)
6–11/y 27 (14.8) 25 (10.5) 23 (14.3) 4 (4.1) 23 (15.2)
1–3/mo 33 (18.0) 56 (23.6) 32 (19.9) 10 (10.3) 29 (19.2)
1–2/wk 19 (10.4) 49 (20.7) 20 (12.4) 2 (2.1) 19 (12.6)
3–5/wk 2 (1.1) 8 (3.4) 2 (1.2) 0 2 (1.3)
Almost every day 2 (1.1) 4 (1.7) 2 (1.2) 0 2 (1.3)
Almost none
36 (19.7)
36 (15.2)
27 (16.8)
23 (23.7)
23 (15.2)

Pick up live poultry before buying‡ <0.001
Yes
120 (81.6)
136 (67.7)
94 (69.6)
38 (51.4)
97 (75.8)

Where did you slaughter the live poultry?§ 0.601
In LPM 123 (83.7) 175 (87.1) 119 (88.1) 66 (89.2) 113 (88.3)
In household 22 (15.0) 23 (11.4) 15 (11.1) 6 (8.1) 13 (10.2)
Other places
2 (1.4)
3 (1.5)
1 (0.7)
2 (2.7)
2 (1.6)

Not buying or buying less since March 2013¶ <0.001
Yes
101 (68.7)
139 (69.2)
123 (91.1)
59 (79.7)
104 (81.3)

Views toward closure of LPMs# 0.06
Agree
37 (25.2)
54 (26.9)
53 (39.3)
25 (33.8)
35 (27.3)

Closure caused any inconvenience**
More inconvenient
NA
NA
45 (31.5)
NA
NA

Distance of nearest LPM from home, km <0.001
<0.50 12 (13.3) 39 (31.0) 21 (18.9) 5 (13.5) 6 (15.0)
0.51–1.00 23 (25.6) 42 (33.3) 32 (28.8) 4 (10.8) 10 (25.0)
1.01–2.00 16 (17.8) 20 (15.9) 16 (14.4) 6 (16.2) 7 (17.5)
>2.00
39 (43.3)
25 (19.8)
42 (37.8)
22 (59.5)
17 (42.5)

Backyard poultry exposure 73 (14.6) 76 (15.2) 34 (6.8) 37 (7.3) 54 (10.8) <0.001

*LPM, live poultry market; NA, not applicable.
†Respondents who bought live poultry ≥1/year were further asked about the number of live poultry bought in the previous year, picking up poultry or not before buying, locations where poultry was slaughtered, and changes in poultry purchase behavior since influenza A(H7N9) outbreak.
‡Respondents who answered always/usually to the question “Did you pick up poultry for examination before deciding to buy it?” were categorized as “Yes.”
§Respondents who stated that they always/usually have live poultry slaughtered in LPMs were categorized as “In LPM,” whereas those who answered always/usually in household were categorized as “in household.”
¶Respondents who answered not buying since then/still buying but less than before to the question “Has your habit of buying live poultry changed since H7N9 was identified in China in March 2013?” were categorized as “Yes.”
#Respondents who answered strongly agree/agree to the question “Would you agree to permanent closure of live poultry markets in order to control avian influenza epidemics?” were categorized as “Agree.”
**Respondents who reported that market closure caused great/some inconvenience were categorized as “More inconvenient.” This question was only asked of respondents in Shanghai because Shanghai was the only area where LPMs were closed at the time of the survey.

Main Article

1These authors contributed equally to this article.

Page created: July 18, 2014
Page updated: July 18, 2014
Page reviewed: July 18, 2014
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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