title: Case report: field-acquired subclinical Babesia equi infection confirmed by in vitro culture.
abstract: A horse with no prior clinical history of equine piroplasmosis tested negative for Babesia caballi and Babesia equi in the complement fixation test before importation into the United States from France. After 5 years in residence in the United States, the animal tested serologically positive for B. equi by the complement fixation test, the immunofluorescent antibody test, and Western blot analysis. The carrier status of the horse was confirmed by culture of B. equi parasites. In vitro culture offers an efficient and comparatively inexpensive method to determine the carrier status of horses suspected of harboring B. equi.
authors.affiliation: Department of Veterinary Pathobiology, Texas Agricultural Experiment Station, Texas A&M University, College Station, USA.
authors.forename: P J
authors.initials: PJ
authors.lastname: Holman
authors.forename: S K
authors.initials: SK
authors.lastname: Hietala
authors.forename: L R
authors.initials: LR
authors.lastname: Kayashima
authors.forename: D
authors.initials: D
authors.lastname: Olson
authors.forename: S D
authors.initials: SD
authors.lastname: Waghela
authors.forename: G G
authors.initials: GG
authors.lastname: Wagner
mesh_terms: D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood; D001403:Babesia / Q000254:growth & development* / Q000276:immunology; D001404:Babesiosis / Q000469:parasitology*; D002353:Carrier State / Q000662:veterinary*; D003168:Complement Fixation Tests; D004912:Erythrocytes / Q000469:parasitology; D005455:Fluorescent Antibody Technique; D006734:Horse Diseases / Q000469:parasitology*; D006736:Horses; D008297:Male
chemical_list: D000913:Antibodies, Protozoan