Variations in equid SLC11A1 (NRAMP1) genes and associations with Rhodococcus equi pneumonia in horses.

Rhodococcus equi is an important intracellular pathogen of horses, most commonly causing chronic, suppurative bronchopneumonia in foals. Although most foals likely are exposed to environmental R. equi within the 1st few days of life, only some develop R.