Figure 2.

Mean herd BHV-1 seroprevalence and 95% CI for seropositive herds by herd size (Numbers indicate the number of herds in each category). Herds are dichotomised by presence of seroconversion.

Woodbine et al. BMC Veterinary Research 2009 5:5   doi:10.1186/1746-6148-5-5
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