Prevalence of Lawsonia intracellularis in pig herds in different European countries

A widespread of <i>Lawsonia intracellularis</i> in the six European countries was confirmed, whereby a large part of the positive animals only excreted small amounts of genome equivalents. Country specific differences were found with Denmark in particular diagnosing more <i>Lawsonia intracellularis</i> then the other countries. Herd data collected in this study needs to be analysed to get more information about possible reasons for the differences found between the countries.