Volume 18, Number 12—December 2012
Research
Outbreak of Influenza A (H3N2) Variant Virus Infection among Attendees of an Agricultural Fair, Pennsylvania, USA, 2011
Table 3
Characteristics of Club X cohort members who attended agricultural Fair A during an outbreak of A(H3N2)v virus infection, Pennsylvania, 2011*
Characteristic | Club X cohort, N = 127 |
---|---|
Sex | |
M |
47/127 (37) |
F |
80/127 (63) |
Case status | |
Suspected case-patient |
14/127 (11) |
Non–case-patient |
113/127 (89) |
Age, y | |
Median (range) | 13 (4–19) |
<4 y |
2/127 (2) |
4–13 |
70/127 (55) |
14–18 |
51/127 (40) |
>19 |
4/127 (3) |
Underlying medical condition | 19/124 (15) |
Reported any prior influenza vaccination | 56/115 (49) |
No. days spent at fair, median (range) | 9 (1–10) |
Exhibited animal at fair | 75/125 (60) |
Exhibited swine at fair | 34/125 (27) |
Family owns livestock | 83/125 (66) |
Family owns swine | 33/125 (26) |
Reported swine exposure† | 100/127 (79) |
*Data are no. with characteristic (%) or no. with characteristic/total no. cohort members with data (%) unless otherwise specified. Club X is an agricultural club for children. A(H3N2)v, influenza A (H3N2) variant virus.
†Includes attending swine exhibit, walking near swine exhibit, or touching swine at fair.