Table 2. Characteristics of poultry workers, swine workers, and controls with seroconversion of influenza A(H7N9), A(H9N2), and A(H5N1) viruses, eastern China, 2013–2016*.
| Virus, participant no. |
Age, y/sex |
Occupation |
Chronic medical condition |
MN titer | |||
|---|---|---|---|---|---|---|---|
| 2013 |
2014 |
2015 |
2016 |
||||
| H7N9 | |||||||
| 1 | 28/F | Chicken slaughtering | No | 40 | 320 | 5 | 5 |
| 2 | 41/F | Chicken slaughtering | No | 5 | 5 | 320 | NA |
| 3 |
63/F |
Retired |
No |
20 |
80 |
NA |
NA |
| H9N2 | |||||||
| 4 | 48/F | Chicken backyard grower | No | 5 | 5 | 80 | 40 |
| 5 | 28/M | Chicken raising | No | NA | 5 | 80 | 80 |
| 6 | 51/F | Chicken raising | No | 5 | 5 | 5 | 80 |
| 7 | 47/F | Chicken seller | No | 5 | 20 | 80 | 40 |
| 8 | 47/M | Chicken seller | No | 5 | 5 | 160 | NA |
| 9 | 46/M | Chicken seller | No | 5 | 5 | 160 | NA |
| 10 | 51/M | Chicken seller | Chronic bronchitis | 5 | 40 | 160 | NA |
| 11 | 49/M | Chicken/duck seller | Diabetes | NA | NA | 20 | 80 |
| 12 | 59/F | Chicken/duck seller | No | 5 | 5 | 80 | 320 |
| 13 | 39/F | Chicken/duck seller | No | 5 | NA | 20 | 80 |
| 14 | 27/F | Chicken/goose seller | No | 5 | 320 | 40 | 40 |
| 15 | 57/F | Chicken/pigeon slaughtering | No | 5 | 40 | 80 | 5 |
| 16 | 52/F | Duck/goose seller | No | 5 | 80 | 5 | 5 |
| 17 | 32/M | Pig slaughtering | No | 5 | 5 | 5 | 80 |
| 18 | 52/M | Pig slaughtering | No | 5 | 80 | NA | 5 |
| 19 | 26/M | Pork seller | No | 5 | 5 | 5 | 160 |
| 20 | 40/M | Grocer, control | Chronic bronchitis | 5 | 160 | 5 | 5 |
| 21 | 48/M | Grocer, control | No | 5 | 5 | 80 | 5 |
| 22 | 38/M | Grocer, control | Diabetes | 5 | 5 | 160 | 5 |
| 23 |
61/M |
Retired, control |
No |
NA |
5 |
5 |
80 |
| H5N1 | |||||||
| 24 | 39/F | Chicken/duck/goose seller | No | 5 | 5 | 20 | 80 |
| 25 | 45/F | Chicken/duck/pigeon raising | No | 20 | 10 | 40 | 80 |
| 26 | 48/M | Pigeon seller | No | 10 | 10 | 10 | 80 |
| 27 | 60/F | Chicken/goose seller | No | 10 | 5 | 40 | 80 |
| 28 | 55/F | Duck/goose seller | No | 5 | 5 | 40 | 160 |
| 29 | 46/F | Chicken slaughtering | No | 40 | 20 | 20 | 80 |
| 30 | 53/F | Chicken slaughtering | No | 20 | 5 | 20 | 80 |
*MN, microneutralization; NA, the participant was not available in this year.