Fig. 2From: BVD seroprevalence in the Irish cattle population as the national BVD programme progresses toward eradicationLadder plot county-level (top panel) and herd-level* (bottom panel) random effect variance in BVD serology risk from a hierarchical model. * Note, only a 2% random sample of herds are presented in the figure so individual herds could be visualised Back to article page