| serosurvey of horses with evidence of equine monocytic ehrlichiosis. | in august 1986, an extensive serosurvey for prevalence of igg and igm antibodies against ehrlichia risticii, the causative agent of equine monocytic ehrlichiosis (eme), was performed at 2 ohio racetracks, river downs (rd) and beulah park (bp). of 840 horses at rd and 574 at bp, 13 and 20%, respectively, were igg antibody-positive (by indirect fluorescent antibody test results), with antibody titer ranging from 1:20 to 1:10,240. the titer observed at highest frequency at both racetracks was 1:80. ... | 1990 | 2266048 |
| equine ehrlichial colitis (potomac horse fever): recognition of the disease in pennsylvania, new jersey, new york, ohio, idaho, and connecticut. | equine ehrlichial colitis (potomac horse fever), a newly identified colitis of the horse, was first recognized in maryland. in this report, we document occurrence of the disease in pennsylvania, new jersey, new york, ohio, idaho, and connecticut. enzootic areas were recognized by a characteristic pattern. frequently there was a seasonal pattern and high prevalence of sporadic colitis in unstressed horses. the attack rate per farm generally was low. horses on pasture, as well as those stabled, we ... | 1986 | 3744978 |