| molecular epidemiology of vapa-positive rhodococcus equi in thoroughbred horses in kagoshima, japan. | the prevalence of virulent r. equi having 15- to 17-kda antigens (vapa) in fecal isolates from 13 thoroughbred foals and their dams on 5 farms in kagoshima, japan, and the plasmid profiles of vapa-positive isolates by restriction fragment digestion patterns were investigated to compare the genotypic variation among virulence plasmids of r. equi isolates from japan. in total, 218 (24.6%) of 886 isolates from the feces of the 13 foals and 13 (12.5%) of 104 isolates from the feces of their dams dem ... | 2002 | 12237518 |