Seroprevalence of Trypanosoma evansi infection in capybaras (Hydrochoerus hydrochaeris) from a nonendemic area in Brazil.

Abstract

In South America, capybaras (Hydrochoerus hydrochaeris) as well as coatis (Nasua nasua) are the reservoir hosts of Trypanosoma evansi. Capybaras from a T. evansi nonendemic area in the State of São Paulo, southeastern Brazil, were culled because of an ongoing outbreak of Brazilian spotted fever; serum samples from these capybaras were tested for antibodies to T. evansi. Of the 172 sera tested, 17 (9.9%) were seropositive by card agglutination test, with antibody titers of 1:8-1:128; 14 (8.1%) of these 17 seropositive sera were also seropositive by indirect fluorescent antibody test, with antibody titers of 1:16-1:256. Both serologic techniques proved to be efficient, with similar results for detection of antibodies to T. evansi in capybaras from a nonendemic area in Brazil.

• Authors: Aleksandro Schafer Da Silva, Felipe da Silva Krawczak, João Fabio Soares, Vanderlei Klauck, Rafael Pazinato, Arlei Marcili, Marcelo Bahia Labruna
• Journal: Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc (J Vet Diagn Invest) Vol. 28 Issue 2 Pg. 171-4 (Mar 2016) ISSN: 1943-4936 [Electronic] United States
• PMID: 26965238 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2016 The Author(s).

Topics

• Agglutination Tests (veterinary)
• Animals
• Brazil (epidemiology)
• Rodentia
• Seroepidemiologic Studies
• Trypanosoma (isolation & purification)
• Trypanosomiasis (epidemiology, veterinary)