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Volume 21, Number 10—October 2015

Effect of Live Poultry Market Closure on Avian Influenza A(H7N9) Virus Activity in Guangzhou, China, 2014

Jun Yuan1, Eric H.Y. Lau1, Kuibiao Li1, Y.H. Connie Leung1, Zhicong Yang1, Caojun Xie1, Yufei Liu1, Yanhui Liu, Xiaowei Ma, Jianping Liu, Xiaoquan Li, Kuncai Chen, Lei Luo, Biao Di, Benjamin J. Cowling, Xiaoping TangComments to Author , Gabriel M. Leung, Ming Wang2Comments to Author , and Malik Peiris2
Author affiliations: Guangzhou Center for Disease Control and Prevention, Guangzhou, China (J. Yuan, K. Li, Z. Yang, C. Xie, Yufei Liu, Yanhui Liu, X. Ma, J. Liu, X. Li, K. Chen, L. Luo, B. Di, M. Wang); The University of Hong Kong, Hong Kong, China (E.H.Y. Lau, Y.H.C. Leung, B.J. Cowling, G.M. Leung, M. Peiris); The Eighth People’s Hospital of Guangzhou, Guangzhou, China (X. Tang)

Main Article

Table 3

Influenza A(H7N9) virus identified in or on different environmental sites in 5 poultry markets under enhanced surveillance, Guangzhou, Guangdong Province, China, 2014*

During market closure
Poultry cage 2/91 (2.2) 0/2 3/59 (5.1) 0/3
Defeathering machine 4/58 (6.9) 0/4 2/30 (6.7) 1/2 (3.3)
Chopping board 9/96 (9.4) 1/8 (1.2) 3/27 (11.1) 0/3
Processing table 7/188 (3.7) 0/7 0/59
Bucket holding poultry meat 0/30
Wastewater 4/92 (4.3) 1/4 (1.1) 3/83 (3.6) 0/3 1/33 (3.0) 1/1 (3.0)
Drinking water 1/6 (16.7) 0/1

*DPM, dressed poultry market; LPM, live poultry market; rRT-PCR, real-time reverse transcription PCR; –, no samples collected.
†Because not all positive samples from rRT-PCR were available for virus culture, isolation rates were derived by using the product of the percentage of rRT-PCR–positive samples and the percentage of those samples that were also culture-positive.
‡These positive samples from rRT-PCR did not have sufficient material available for virus culture.

Main Article

1These first authors contributed equally to this article.

2These senior authors contributed equally to this article.

Page created: September 22, 2015
Page updated: September 22, 2015
Page reviewed: September 22, 2015
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