Porcine proliferative enteritis (PPE) is an important enteric disease and is widespread in intensive pig production. It is caused by Lawsonia intracellularis, intracellular bacteria which affect more frequently postweaned pigs between 6 and 20 weeks of age. The aim of the study described in this paper was to obtain data on the prevalence of Lawsonia intracellularis infections in Romanian pig he…