Volume 15, Number 12—December 2009
Research
Risk for Infection with Highly Pathogenic Avian Influenza Virus (H5N1) in Backyard Chickens, Bangladesh
Paritosh K. Biswas
, Jens P. Christensen, Syed S.U. Ahmed, Ashutosh Das, Mohammad H. Rahman, Himel Barua, Mohammad Giasuddin, Abu S.M.A. Hannan, Mohammad A. Habib, and Nitish C. Debnath
, Jens P. Christensen, Syed S.U. Ahmed, Ashutosh Das, Mohammad H. Rahman, Himel Barua, Mohammad Giasuddin, Abu S.M.A. Hannan, Mohammad A. Habib, and Nitish C. DebnathTable 3
Results of final model with potential risk factors for highly pathogenic avian influenza virus (H5N1) in backyard chickens, Bangladesh, 2007*
| Risk factor | Odds ratio | 95% Confidence interval | p value |
|---|---|---|---|
| Nearby (<0.1 km) body of water | 5.27 | (1.24–22.34) | 0.024 |
| Contact with pigeons | 4.47 | (1.14–17.50) | 0.032 |
| Chickens and ducks in different night shelters | 0.06 | (0.01–0.45) | 0.006 |
| Offering slaughter remnants of purchased chickens† | 13.29 | (1.34–131.99) | 0.027 |
*Conditional logistic regression; final model with 4 variables entered; χ2 for likelihood ratio test = 38.82; p>0.001; no. observations = 100.
†Within 21 days of the onset clinical signs in case backyard farms.
