title: Survey for infection with Onchocerca cervicalis in horses in eastern United States.
abstract: This survey was performed to study the prevalence of infection with Onchocerca cervicalis in horses in the eastern United States. In the course of the survey, 121 horses, 1 mule and 1 donkey were examined. Microfilariae were recovered from 74 (61%) of the horses examined. All infected horses showed microfilariae of O cervicalis in the umbilical sample, 62 (84%) were infected in the eyelid and, in 36 (49%), microfilariae had invaded the eye. The mule was unifected and the donkey was infected with O cervicalis.
mesh_terms: D000818:Animals; D005260:Female; D006734:Horse Diseases / Q000453:epidemiology* / Q000469:parasitology; D006736:Horses; D008297:Male; D009855:Onchocerciasis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D014481:United States