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Pie charts showing the prevalence of farms with a frequency ≥10% of single nucleotide polymorphism (SNPs) in isotype 1 β-tubulin of Haemonchus spp, associated with benzimidazole resistance. Only farms with complete datasets for all three SNPs were included in the analysis (numbers of farms are shown at the right bottom of the pie charts). Prevalence of SNPs and combinations of SNPs on the farm level are shown with 95% confidence intervals below the figures. CH, Switzerland; IT, Italy.
