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Volume 26, Number 5—May 2020

Effectiveness of Live Poultry Market Interventions on Human Infection with Avian Influenza A(H7N9) Virus, China

Wei Wang1, Jean Artois1, Xiling Wang, Adam J. Kucharski, Yao Pei, Xin Tong, Victor Virlogeux, Peng Wu, Benjamin J. Cowling, Marius Gilbert2, and Hongjie Yu2Comments to Author 
Author affiliations: Fudan University School of Public Health, Shanghai, China (W. Wang, X. Wang, Y. Pei, X. Tong, H. Yu); Université Libre de Bruxelles, Brussels, Belgium (J. Artois, M. Gilbert); London School of Hygiene and Tropical Medicine, London, UK (A.J. Kucharski); École Normale Supérieure de Lyon, Lyon, France (V. Virlogeux); Cancer Research Center of Lyon, Lyon (V. Virlogeux); School of Public Health, University of Hong Kong, Hong Kong, China (V. Virlogeux, P. Wu, B.J. Cowling); Fonds National de la Recherche Scientifique, Brussels (M. Gilbert)

Main Article

Table 3

Estimates of the net effect of LPM closures by comparing the reductions in the number of influenza A(H7N9) infections between study sites with and without closures, adjusting for similar season pattern of absolute humidity, China*

Study sites with LPM interventions Reduction in no. infections, % (95% CI)
Reference sites without LPM interventions
Study sites with LPM interventions, R1 Reference sites without LPM interventions, R2 Difference in reduction, 
R1 – R2 p value
Site no. Province Cities
Site 1 1 Jiangsu Huaian (Huaian District, Qingpu District), Nantong (Haimen City, Rugao City), Xuzhou (Suining County), Yancheng (Dongtai City), Yangzhou (Hanjiang District) 97.0 (93.0–100.0) 52.0 (12.0–61.0) 45.0 (32.0–88.0) <0.001
Site 2 1 90.0 (88.0–94.0) 57.0 (16.0–67.0) 33.0 (21.0–78.0) <0.001
Site 3 1 90.0 (84.0–99.0) 70.0 (42.0–76.0) 20.0 (8.0–57.0) <0.001
Site 4 1 94.0 (89.0–99.0) 49.0 (10.0–48.0) 44.0 (30.0–89.0) <0.001
Site 5 1 98.0 (96.0–100.0) 48.0 (20.0–58.0) 51.0 (38.0–80.0) <0.001
Site 6 1 50.0 (32.0–74.0) 32.0 (21.0–50.0) 18.0 (10.0–23.0) <0.001
Site 14 1 93.0 (86.0–100.0) 40.0 (27.0–63.0) 52.0 (36.0–59.0) <0.001
Site 17 1 84.0 (78.0–94.0) 46.0 (39.0–61.0) 38.0 (33.0–39.0) <0.001
Site 13 2 Hunan Chenzhou (Beihu District, Yongxing County), Hengyang (Hengdong County, Shigu District, Zhuhui District), Loudi (Shuangfeng District), Shaoyang (Shaodong County, Xinning County, Xinshao County), Zhangjiajie (Yongding District) 86.0 (81.0–87.0) 85.0 (84.0–86.0) 0.5 (−3.0 to 1.0) 0.098

*Similar seasonal patterns of absolute humidity had been observed among study sites with and without closures (e.g., study site 1–6, site 14, site 17, and reference site 1). LPM, live poultry market.

Main Article

1These authors contributed equally to this article.

2These authors are joint senior authors.

Page created: April 16, 2020
Page updated: April 16, 2020
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