DIAS E.

FREITAS M. C. D. O.

HORTA M. C.

LABRUNA M. B.

LASCOLA B.

LEMOS E. R. S.

MOREIRA J. A.

PACHECO R. C.

PINTER A.

SANGIONI L. A.

SILVEIRA I.

TOLEDO R. S.

Revista Brasileira de Parasitologia Veterinária

English

Brazilian spotted fever (BSF) is an emerging disease most likely caused by Rickettsia rickettsii. The objective of the present study was to estimate the seroprevalence of BSF rickettsia infections in equines from six horse farms located in Londrina County, Paraná, Southern Brazil. Six owners of horse farms situated in Cambé, Santa Fé, Guaraci and Londrina municipalities participated in the study. All farms were located in areas where BSF has not been reported. A total of 273 horses were sampled and their sera were tested by indirect Immunofluorescence assay (IFA) using R. rickettsii and R. parkeri antigens. Titers equal to and greater than 64 were considered positive. Of 273 sera tested, 15 (5.5%) reacted to R. rickettsii and 5 (1.8%) to R. parkeri. Five out of the six farms studied revealed seropositive animals and seropositivity rate ranged from 0 to 13%. The titers ranged from 64 to 512, and four samples had a titer of 512. Nine animals reacted to R. rickettsii with titers four-fold higher than those for R. parkeri. These results suggest that horses in Northern Paraná may have been exposed to rickettsiae identical or closely related to R. rickettsii.</jats:p

Katia Tamekuni

Roberta dos Santos Toledo

Mauro de Freitas Silva Filho

Valeska Bender Haydu

Richard Campos Pacheco

José Henrique Cavicchioli

Marcelo Bahia Labruna

John Stephen Dumler

Odilon Vidotto

Crossref

Serosurvey of antibodies against spotted fever group Rickettsia spp. in horse farms in Northern Paraná, Brazil

http://www.scielo.br/pdf/rbpv/v19n4/a14v19n4.pdf

Serosurvey of antibodies against spotted fever group Rickettsia spp. in horse farms in Northern Paraná, Brazil

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