Volume 23, Number 9—September 2017
Research
Risk for Low Pathogenicity Avian Influenza Virus on Poultry Farms, the Netherlands, 2007–2013
Figure 1

Figure 1. Risk for introduction of low pathogenicity avian influenza virus into duck-breeder, meat-duck, meat-turkey, and outdoor-layer farms, the Netherlands, 2007–2013. For the estimation of the relative risk as a function of distance to medium-sized waterways (3–6 m wide), distance to wild waterfowl areas was kept constant.
1Current affiliation: GD Animal Health, Deventer, the Netherlands.
2These authors contributed equally to this article.