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