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Volume 25, Number 12—December 2019
Research

Avian Influenza A Viruses among Occupationally Exposed Populations, China, 2014–2016

Chuansong Quan1, Qianli Wang1, Jie Zhang, Min Zhao, Qigang Dai, Ting Huang, Zewu Zhang, Shenghua Mao, Yifei Nie, Jun Liu, Yun Xie, Baorong Zhang, Yuhai Bi, Weifeng Shi, Peipei Liu, Dayan Wang, Luzhao Feng, Hongjie YuComments to Author , William J. LiuComments to Author , and George F. GaoComments to Author 
Author affiliations: National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China (C. Quan, J. Zhang, P. Liu, D. Wang, W.J. Liu, G.F. Gao); Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (C. Quan, W. Shi); Fudan University School of Public Health, Shanghai, China (Q. Wang, H. Yu); Institute of Microbiology, Chinese Academy of Sciences, Beijing (M. Zhao, Y. Bi, G.F. Gao); Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China (Q. Dai); Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China (T. Huang); Dongguan Municipal Center for Disease Control and Prevention, Dongguan, China (Z. Zhang); Shanghai Municipal Center for Disease Control and Prevention, Shanghai (S. Mao); Henan Provincial Center for Disease Control and Prevention, Zhengzhou, China (Y. Nie); Zaozhuang Center for Disease Control and Prevention, Zaozhuang, China (J. Liu); Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, China (Y. Xie); Aviation General Hospital, Beijing (B. Zhang); Chinese Center for Disease Control and Prevention, Beijing (L. Feng, G.F. Gao)

Main Article

Table 3

Seroprevalence among poultry workers surveyed for avian influenza viruses, China, 2014–2016*

Antigen
 No. (%, 95% CI) seropositive participants
2014 Dec, n = 700
 2015 Apr, n = 506
 2015 Dec, n = 481
 2016 Apr, n = 437
 Total, n = 2124
Avian influenza serotype
H5N1-SH199 6 (0.9, 0.2–1.5) 6 (1.2, 0.2–2.1) 10 (2.1, 0.8–3.4) 6 (1.4, 0.3–2.5) 28 (1.3, 0.8–1.8)
H5N1-SC29 22 (3.1, 1.8–4.4) 17 (3.4, 1.8–4.9) 2 (0.4, 0.1–1.5) 3 (0.7, 0.1–2.0) 44 (2.1, 1.5–2.7)
H5N6 28 (4, 2.5–5.5) 11 (2.2, 0.9–3.4) 2 (0.4, 0.1–1.5) 1 (0.2, 0–1.3) 42 (2.0, 1.4–2.6)
H6N1 22 (3.1, 1.8–4.4) 21 (4.1, 2.4–5.9) 5 (1, 0.1–1.9) 5 (1.1, 0.4–2.6) 53 (2.5, 1.8–3.2)
H6N6 0 (0, 0–0.5) 0 (0, 0–0.7) 7 (1.5, 0.4–2.5) 1 (0.2, 0–1.3) 8 (0.4, 0.1–0.6)
H7N9 33 (4.7, 3.1–6.3) 36 (7.1, 4.9–9.4) 6 (1.3, 0.3–2.2) 7 (1.6, 0.4–2.8) 82 (3.9, 3.0–4.7)
H9N2
 48 (6.9, 5.0–8.7)
 59 (11.7, 8.9–14.5)
 64 (13.3, 10.3–16.3)
 66 (15.1, 11.7–18.5)
 237 (11.2, 9.8–12.5)
Seasonal influenza serotype
H1N1(pdm09) 94 (13.4, 10.9–16.0) 85 (16.8, 13.5–20.1) 90 (18.7, 15.2–22.2) 79 (18.1, 14.5–21.7) 348 (16.4, 14.8–18.0)
H3N2 237 (33.9, 30.4–37.4) 165 (32.6, 28.5–36.7) 199 (41.4, 37.0–45.8) 171 (39.1, 34.6–43.7) 772 (36.3, 34.3–38.4)

Main Article

1These authors contributed equally to this article.

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