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Volume 15, Number 12—December 2009

Research

Risk for Infection with Highly Pathogenic Avian Influenza Virus (H5N1) in Backyard Chickens, Bangladesh

Paritosh K. BiswasComments to Author , 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
Author affiliations: Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh (P.K. Biswas, S.S.U. Ahmed, A. Das, M.H. Rahman, H. Barua, N.C. Debnath); Copenhagen University, Copenhagen, Denmark (J.P. Christensen); Bangladesh Livestock Research Institute, Dhaka, Bangladesh (M. Giasuddin); Department of Livestock Services, Dhaka (A.S.M.A. Hannan, M.A. Habib)

Main Article

Table 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.

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