Volume 24, Number 7—July 2018
Research
Avian Influenza A Virus Infection among Workers at Live Poultry Markets, China, 2013–2016
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.
1These authors contributed equally to this article.