Volume 18, Number 9—September 2012
Dispatch
Influenza A(H1N1)pdm09 Virus among Healthy Show Pigs, United States
Gregory C. Gray
, Jeffrey B. Bender, Carolyn B. Bridges, Russell F. Daly, Whitney S. Krueger, Michael J. Male, Gary L. Heil, John A. Friary, Robin B. Derby, and Nancy J. Cox
, Jeffrey B. Bender, Carolyn B. Bridges, Russell F. Daly, Whitney S. Krueger, Michael J. Male, Gary L. Heil, John A. Friary, Robin B. Derby, and Nancy J. CoxTable
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.
