Volume 13, Number 3—March 2007
Research
Risk for Infection with Highly Pathogenic Influenza A Virus (H5N1) in Chickens, Hong Kong, 2002
Nina Y. Kung*†1
, Roger S. Morris*, Nigel R. Perkins*, Les D. Sims‡, Trevor M. Ellis‡, Lucy Bissett‡, Mary Chow‡, Ken F. Shortridge‡, Yi Guan‡, and Malik J.S. Peiris‡
, Roger S. Morris*, Nigel R. Perkins*, Les D. Sims‡, Trevor M. Ellis‡, Lucy Bissett‡, Mary Chow‡, Ken F. Shortridge‡, Yi Guan‡, and Malik J.S. Peiris‡Table 2
Descriptive analysis of farm area, standing population of chickens, and number of sheds of chicken farms included in survey, Hong Kong, 2002*
| Case (n = 16) | Control (n = 46) | p value | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Median | Max | Min | SD | Mean | Median | Max | Min | SD | ||
| Farm area (m2) | 4,008 | 1,700 | 18,600 | 900 | 4,684 | 3,275 | 1,975 | 28,350 | 207 | 4,331 | 0.86 |
| Chicken count (×1,000) | 41.3 | 27.5 | 101.4 | 5.6 | 33.3 | 16.2 | 16.0 | 51 | 3.5 | 10.2 | <0.001 |
| Shed no. | 7.4 | 5.5 | 20 | 2 | 5.9 | 8.0 | 7.5 | 19 | 1 | 4.4 | 0.65 |
*Max, maximum; Min, minimum; SD, standard deviation.
