| evaluation of the field efficacy of an avirulent live lawsonia intracellularis vaccine in foals. | equine proliferative enteropathy caused by lawsonia intracellularis is an emerging disease with as yet unaddressed preventative measures. the hypothesis of this study was that vaccination will prevent clinical and sub-clinical disease. weanling thoroughbreds (n=202) from central kentucky were randomly assigned into two groups (vaccinated and non-vaccinated). vaccinated foals received 30ml of an avirulent, live l. intracellularis vaccine intra-rectally twice, 30days apart. foals were monitored fo ... | 2011 | 21741284 |