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Volume 24, Number 7—July 2018
Research

Avian Influenza A Virus Infection among Workers at Live Poultry Markets, China, 2013–2016

Mai-Juan Ma1Comments to Author , Teng Zhao1, Shan-Hui Chen, Xian Xia, Xiao-Xian Yang, Guo-Lin Wang, Li-Qun Fang, Guan-Yuan Ma, Meng-Na Wu, Yan-Hua Qian, Natalie E. Dean, Yang Yang, Bing LuComments to Author , and Wu-Chun CaoComments to Author 
Author affiliations: Beijing Institute of Microbiology and Epidemiology, Beijing, China (M.-J. Ma, T. Zhao, X. Xia, X.-X. Yang, G.-L. Wang, L.-Q. Fang, M.-N. Wu, W.-C. Cao); Wuxi Municipal Center for Disease Control and Prevention, Wuxi, China (S.-H. Chen, G.-Y. Ma, Y.-H. Qian, B. Lu); The PLA Army General Hospital, Beijing (X. Xia); Taihu University of Wuxi, Wuxi (X.-X. Yang); University of Florida, Gainesville, Florida, USA (N.E. Dean, Y. Yang)

Main Article

Table 4

Seroincidence of influenza A(H7N9), A(H9N2), and A(H5N1) viruses in in poultry workers, swine workers, and controls, eastern China, 2013–2016*

Antigen, participant category Person-years No. seroconversions Incidence (95% CI) IRR (95% CI)
H7N9
Poultry workers 1,569 2 1.27 (0.15–4.60) 3.30 (0.17–194.48)
Swine workers 1,558 0 0 (0–2.36) 1.66 (0–64.73)
Controls
 2,586
 1
 0.39 (0.01–2.15)
 Reference
H9N2
Poultry workers 1,569 13 8.28 (4.42–14.12) 5.36 (1.65–22.55)
Swine workers 1,558 3 1.93 (0.40–5.61) 1.24 (0.18–7.36)
Controls
 2,586
 4
 1.54 (0.42–3.96)
 Reference
H5N1
Poultry workers 1,569 7 4.46 (1.80–9.17) NA
Swine workers 1,558 0 0 (0–2.36) NA
Controls 2,586 0 0 (0–1.43) Reference

*Incidence is per 1,000 person-years. IRR, incidence rate ratio; NA, statistics not performed because of 0 in 2 groups.

Main Article

1These authors contributed equally to this article.

Page created: June 22, 2018
Page updated: June 22, 2018
Page reviewed: June 22, 2018
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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