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Volume 23, Number 10—October 2017

Dispatch

Monitoring Avian Influenza Viruses from Chicken Carcasses Sold at Markets, China, 2016

Xiaoxiao Mao1, Jie Wu1, Eric H.Y. Lau, Kit Ling Cheng, Zhifeng Zhong, Yinchao Song, Xunmin Ji, Lirong Zhou, Changwen Ke, Joseph Sriyal Malik Peiris, Hong Wang2Comments to Author , and Hui-Ling Yen2Comments to Author 
Author affiliations: South China Agriculture University, Guangzhou, China (X. Mao, H. Wang); Guangdong Provincial Center for Disease Control and Prevention, Guangzhou (X. Mao, J. Wu, Z. Zhong, Y. Song, L. Zhou, C. Ke); The University of Hong Kong, Hong Kong, China (E.H.Y. Lau, K.L. Cheng, J.S.M. Peiris, H.-L. Yen)

Main Article

Table 1

AIV detected from chicken carcasses sold at live poultry markets, dressed poultry stalls, or supermarkets, Guangzhou, Guangdong Province, China, June–December 2016*

Swab type
No. qRT-PCR positive/no. tested (%)
No. culture positive/no. tested (%)†
Dressed poultry stall‡
Retail market§
Supermarket¶
p value#
Dressed poultry stall‡
Retail market§
Supermarket¶
p value#
Oropharyngeal 67/121 (55.4) 207/277 (74.7) 2/62 (3.2) 0.097 44/121 36.4) 158/277 (57.0) 0/62 (0) 0.026
Cloacal 55/120 (45.8) 177/265 (66.8) 4/62 (6.5) 0.053 38/120 31.7) 133/265 (50.2) 0/62 (0) 0.033
Visceral cavity 48/118 (40.7) 203/329 (61.7) 2/23 (8.7) 0.033 23/118 19.5) 93/329 (28.3) 0/23 (0) 0.151

*AIV, avian influenza virus; qRT-PCR, quantitative real-time reverse transcription PCR.
†All qRT-PCR–positive samples were tested for infectivity in MDCK cells, and all qRT-PCR–negative samples were assumed negative for AIV infectivity.
‡Chickens centrally slaughtered at the wholesale market are sold at designated dressed poultry stalls without live poultry on site.
§Data from 3 retail markets located at different districts in Guangzhou city.
¶Data from 3 supermarket chains with poultry supplied by different industrial suppliers.
#Comparison of AIV-positive rates between dressed poultry stalls and retail markets by Fisher exact test.

Main Article

1These authors contributed equally to this article.

2These senior authors contributed equally to this article.

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