Volume 18, Number 12—December 2012
Research
Outbreak of Influenza A (H3N2) Variant Virus Infection among Attendees of an Agricultural Fair, Pennsylvania, USA, 2011
Karen K. Wong
, Adena Greenbaum, Maria E. Moll, James Lando, Erin L. Moore, Rahul Ganatra, Matthew Biggerstaff, Eugene Lam, Erica E. Smith, Aaron D. Storms, Jeffrey R. Miller, Virginia Dato, Kumar Nalluswami, Atmaram Nambiar, Sharon A. Silvestri, James R. Lute, Stephen Ostroff, Kathy Hancock, Alicia Branch, Susan C. Trock, Alexander Klimov, Bo Shu, Lynnette Brammer, Scott Epperson, Lyn Finelli, and Michael A. Jhung
, Adena Greenbaum, Maria E. Moll, James Lando, Erin L. Moore, Rahul Ganatra, Matthew Biggerstaff, Eugene Lam, Erica E. Smith, Aaron D. Storms, Jeffrey R. Miller, Virginia Dato, Kumar Nalluswami, Atmaram Nambiar, Sharon A. Silvestri, James R. Lute, Stephen Ostroff, Kathy Hancock, Alicia Branch, Susan C. Trock, Alexander Klimov, Bo Shu, Lynnette Brammer, Scott Epperson, Lyn Finelli, and Michael A. JhungTable 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.
