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Rickettsial spotted fever in capoeirão village, Itabira, Minas Gerais, Brazil.
Vianna, Manoella Campostrini Barreto; Horta, Maurício Claudio; Sangioni, Luis Antônio; Cortez, Adriana; Soares, Rodrigo Martins; Mafra, Cláudio Lisias; Galvão, Márcio Antônio Moreira; Labruna, Marcelo Bahia; Gennari, Solange Maria.
Affiliation
  • Vianna MC; Faculty of Veterinary Medicine, Preventive Veterinary Medicine Department, University of São Paulo, São Paulo, SP, Brazil.
Rev Inst Med Trop Sao Paulo ; 50(5): 297-301, 2008.
Article in En | MEDLINE | ID: mdl-18949349
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.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Rickettsia / Ticks / Rocky Mountain Spotted Fever / Endemic Diseases / Insect Vectors / Antibodies, Bacterial Type of study: Diagnostic_studies / Screening_studies Limits: Animals / Humans Country/Region as subject: America do sul / Brasil Language: En Journal: Rev Inst Med Trop Sao Paulo Year: 2008 Document type: Article Affiliation country: Brazil Country of publication: Brazil

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Rickettsia / Ticks / Rocky Mountain Spotted Fever / Endemic Diseases / Insect Vectors / Antibodies, Bacterial Type of study: Diagnostic_studies / Screening_studies Limits: Animals / Humans Country/Region as subject: America do sul / Brasil Language: En Journal: Rev Inst Med Trop Sao Paulo Year: 2008 Document type: Article Affiliation country: Brazil Country of publication: Brazil