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Table 3 Herd level variation in fluke infection status, with herds categorised as exposed (with at least one infected animal culled in a given year) or non-exposed (without any culled animals with evidence of fluke infection at post-mortem) across years (2011–2013) in Northern Ireland

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

Herd fluke status 2011 2012 2013 Total
Non-Exposed 4,890 5,346 4,502 14,738
(%) 35.16 39.15 36.20 36.85
Exposed 9,017 8,309 7,933 25,259
(%) 64.84 60.85 63.80 63.15
Total 13,907 13,655 12,435 39,997