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Volume 12, Number 2—February 2006

Research

Free-grazing Ducks and Highly Pathogenic Avian Influenza, Thailand

Marius Gilbert*Comments to Author , Prasit Chaitaweesub†, Tippawon Parakamawongsa†, Sith Premashthira†, Thanawat Tiensin†‡, Wantanee Kalpravidh§, Hans Wagner§, and Jan Slingenbergh§¶
Author affiliations: *Université Libre de Bruxelles, Brussels, Belgium; †Department of Livestock Development, Bangkok, Thailand; ‡Utrecht University, Utrecht, the Netherlands; §Food and Agriculture Organization, Bangkok, Thailand; ¶Food and Agriculture Organization, Rome, Italy

Main Article

Table A1

Estimated values ± standard error for the nugget, scale, and range of the best-fit spherical models of the spatial correlograms of highly pathogenic avian influenza presence or absence

Model Nugget Scale Range (km) r2
Thailand, all outbreaks 0.727 ± 0.011 0.222 ± 0.012 52.41 ± 3.66 0.946
Thailand, outbreaks in chickens 0.703 ± 0.017 0.243 ± 0.017 23.88 ± 2.02 0.925
Thailand, outbreaks in ducks 0.703 ± 0.004 0.243 ± 0.005 72.41 ± 2.11 0.990
Suphanburi Province, all outbreaks 0.875 ± 0.007 0.146 ± 0.007 27.35 ± 1.90 0.946
Suphanburi Province, outbreaks in chickens 0.848 ± 0.008 0.163 ± 0.008 20.20 ± 1.29 0.954
Suphanburi Province, outbreaks in ducks 0.866 ± 0.007 0.148 ± 0.007 25.05 ± 1.60 0.953

Main Article

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