EFFICACY OF ORAL VACCINATION AGAINST PORCINE PROLIFERATIVE ENTEROPATHY ON FARMS ENDEMICALLY INFECTED WITH PRRSV AND MYCOPLASMAHYOPNEUMONIAE

摘要

It is known that existing viral and/or bacterial co-infections can influence the development and quality of specific vaccine derived active immunity (1, 2). The aim of this paper was to evaluate the efficacy of oral vaccination with live Lawsonia intracellularis (L.i) vaccine in pig herds infected with Mycoplasma hyopneumoniae (M.hyo) and/or PRRSV with herds free from both pathogens but infected with Lawsonia intracellularis.