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Table 4 The overall status of herds in NI relative to the number of samples taken per herd over the period 2011–2013. Note, the cut-point where there were no fluke free herds was 105 animals sampled

From: Liver fluke (Fasciola hepatica) infection in cattle in Northern Ireland: a large-scale epidemiological investigation utilising surveillance data

Herd status     Samples     
  1–4 5–9 10–19 20–39 40–79 80–159 >160 Total
0 4,535 709 272 93 31 5 0 5,645
% 65.78 30.36 12.97 4.70 1.62 0.32 0 30.91
1 2,359 1,626 1,825 1,887 1,878 1,560 1,485 12,620
% 34.22 69.64 87.03 95.3 98.38 99.68 100 69.09
Total 6,894 2,335 2,097 1,980 1,909 1,565 1,485 18,265