Exposure variables | Total (number = 827) | Zoo workers (number = 48) | Swine workers (number = 352) | Slaughterhouse workers (number = 24) | Veterinarians (number = 26) | Poultry workers (number = 76) | Non-animal exposed controls (number = 107) | Poultry retailers in agricultural-trade (number = 194) |
---|---|---|---|---|---|---|---|---|
Gender | ||||||||
Female | 253 | 11 | 109 | 0 | 0 | 18 | 45 | 70 |
Male | 574 | 37 | 243 | 24 | 26 | 58 | 62 | 124 |
Age-group (years) | ||||||||
< 20 | 30 | 2 | 4 | 0 | 0 | 1 | 19 | 4 |
20 to 30 | 160 | 19 | 53 | 2 | 4 | 14 | 18 | 50 |
30 to 40 | 228 | 18 | 93 | 6 | 8 | 26 | 17 | 60 |
>40 | 409 | 9 | 202 | 16 | 14 | 35 | 53 | 80 |
Mean age (years) | 38.5 | 31.3 | 40.5 | 42.2 | 40.4 | 37.1 | 38.5 | 36.5 |