Volume 18, Number 9—September 2012
Dispatch
Influenza A(H1N1)pdm09 Virus among Healthy Show Pigs, United States
Table
Characteristics of 123 persons enrolled in study of influenza A virus among show pigs, Minnesota and South Dakota state fairs, 2008 and 2009
Characteristic | No. (%) |
---|---|
State fair where enrolled | |
Minnesota |
90 (73.2) |
South Dakota |
33 (26.8) |
Year enrolled | |
2008 |
48 (39.0) |
2009 |
75 (61.0) |
Age group, y* | |
<8 |
29 (23.6) |
18–39 |
37 (30.1) |
40–59 |
46 (37.4) |
>60 |
8 (6.5) |
Sex* | |
M |
86 (69.9) |
F |
35 (28.5) |
Work performed in the last 30 d† | |
Unemployed |
8 (6.5) |
Farmer |
108 (87.8) |
Swine farmer |
100 (81.3) |
Government employee |
8 (6.5) |
Veterinarian/veterinary assistant |
2 (1.6) |
Receipt of vaccination for human influenza in past 2 y* | |
Yes |
35 (28.5) |
No |
76 (61.8) |
Unknown |
7 (5.7) |
Respiratory illness in past 12 mo* | |
Yes |
64 (52.0) |
No |
55 (44.7) |
Unknown |
2 (1.6) |
Worked with swine, y* | |
<1 |
3 (2.4) |
>1–4 |
10 (8.1) |
5–10 |
39 (31.7) |
>10 |
50 (40.7) |
*These covariates have missing data.
†Responses are not mutually exclusive.