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Table 2 The mean percentage of animals within-herds that exhibited evidence of liver fluke infection

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

 

2011

2012

2013

Mean

Mean within-herd %

24.60 %

21.38 %

23.55 %

23.18 %

Std. Dev.

0.281

0.270

0.274

0.276

Total herds

13,907

13,655

12,435

13,332