Rickettsial spotted fever in capoeirão Village, Itabira, Minas Gerais, Brazil

Authors

  • Manoella Campostrini Barreto Vianna University of São Paulo; Faculty of Veterinary Medicine; Preventive Veterinary Medicine Department
  • Maurício Claudio Horta University of São Paulo; Faculty of Veterinary Medicine; Preventive Veterinary Medicine Department
  • Luis Antônio Sangioni University of São Paulo; Faculty of Veterinary Medicine; Preventive Veterinary Medicine Department
  • Adriana Cortez University of São Paulo; Faculty of Veterinary Medicine; Preventive Veterinary Medicine Department
  • Rodrigo Martins Soares University of São Paulo; Faculty of Veterinary Medicine; Preventive Veterinary Medicine Department
  • Cláudio Lisias Mafra Federal University of Viçosa; Biochemistry and Molecular Biology Department
  • Márcio Antônio Moreira Galvão Federal University of Ouro Preto; Clinical and Social Nutrition
  • Marcelo Bahia Labruna University of São Paulo; Faculty of Veterinary Medicine; Preventive Veterinary Medicine Department
  • Solange Maria Gennari University of São Paulo; Faculty of Veterinary Medicine; Preventive Veterinary Medicine Department

Keywords:

Spotted fever, Rickettsia rickettsii, Indirect Immunofluorescence Assay, PCR, Itabira

Abstract

The present study investigated the infection by spotted fever rickettsia in an endemic area for Brazilian spotted fever (BSF; caused by Rickettsia rickettsii) in Minas Gerais State, Brazil. Human, canine and equine sera samples, and Amblyomma cajennense adult ticks collected in a rural area of Itabira City, Minas Gerais State were tested for rickettsial infection. Through Immunofluorescence Assay (IFA) we demonstrated the presence of antibodies anti-R. rickettsii in 8.2%, 81.3% and 100% of the human, canine and equine sera, respectively. None of the 356 tick specimens analyzed were positive for Rickettsia by the hemolymph test or Polymerase Chain Reaction technique (PCR) for the htrA and the gltA genes. Our serological results on horses and dogs (sentinels for BSF) appoint for the circulation of a SFG Rickettsia in the study area, however in a very low infection rate among the A. cajennense tick population.

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Published

2008-10-01

Issue

Vol. 50 No. 5 (2008)

Section

Rickttsioses

How to Cite

Vianna, M. C. B., Horta, M. C., Sangioni, L. A., Cortez, A., Soares, R. M., Mafra, C. L., Galvão, M. A. M., Labruna, M. B., & Gennari, S. M. (2008). Rickettsial spotted fever in capoeirão Village, Itabira, Minas Gerais, Brazil . Revista Do Instituto De Medicina Tropical De São Paulo, 50(5), 297-301. https://www.revistas.usp.br/rimtsp/article/view/31205