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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 5

Risk factors for testing seropositive or seroconverting against influenza A(H9N2) and A(H5N1) viruses among poultry workers and controls, eastern China, 2013–2016*

Risk factor, antigen Total Seropositive or seroconverted, no. (%) Crude OR (95% CI) Adjusted OR (95% CI)
Poultry worker
H9N2 468 18 (3.85)
Exposure behavior†
Selling 181 13 (7.18) 4.68 (1.04–21.13) 4.25 (1.20–25.32)
Raising 198 3 (1.52) 0.93 (0.15–5.65) 1.12 (0.18–6.85)
Cleaning 134 1 (0.75) 0.46 (0.04–5.08) 0.22 (0.05–4.99)
Transporting 46 0 NA NA
Slaughtering 123 2 (1.63) Reference Reference
H5N1 468 18 (3.85)
Sex
F 222 14 (6.31) 4.07 (1.32–12.56) 5.48 (2.38–12.62)
M 246 4 (1.63) Reference Reference
Exposure†
Goose 49 5 (10.20) 3.24 (1.11–9.42) 2.64 (0.72–9.74)
Pigeon 66 6 (9.09) 2.85 (1.06–7.70) 3.13 (1.23–8.00)
Duck 104 7 (6.73) 2.06 (0.81–5.23) 1.87 (0.77–5,01)
Chicken
 413
 14 (3.39)
 Reference
 Reference
Controls, H9N2 1030 9 (0.87)
Sex
M 495 8 (1.62) 8.77 (1.10–70.39) 8.75 (1.09–70.45)
F 535 1 (0.19) Reference Reference
  Chronic respiratory disease
Yes 38 2 (5.26) 7.82 (1.57–38.96) 7.24 (1.42–37.00)
No 992 7 (0.71) Reference Reference

*OR, odds ratio; NA, statistics not performed because of 0 in 2 or 3 groups.
†Participants might be included in multiple categories.

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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