Prevention of foal mortality due to Rhodococcus equi pneumonia on an endemically affected farm.

Over the course of one summer, foals on a horse breeding farm where Rhodococcus equi infection was endemic were examined clinically twice weekly for evidence of R. equi pneumonia. Examination usually commenced from the week of birth and continued for up to 14 weeks of age. Affected animals were treated with a variety of antimicrobial drugs and such treatment was often prolonged. For descriptive pu…