Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Sangioni, Luis A. ; Horta, Maurício C. ; Vianna, Manoella C.B. ; Gennari, Solange M. ; Soares, Rodrigo M. ; Galvão, Márcio A.M. ; Schumaker, Teresinha T.S. ; Ferreira, Fernando ; Vidotto, Odilon ; Labruna, Marcelo B.
• Description:
  We compared the rickettsial infection status of Amblyomma cajennense ticks, humans, dogs, and horses in both Brazilian spotted fever (BSF)-endemic and -nonendemic areas in the state of Sao Paulo, Brazil. Most of the horses and few dogs from BSF-endemic areas had serologic titers against Rickettsia rickettsii antigens. In contrast, no dogs or horses from BSF-nonendemic areas had serologic titers against R. rickettsii antigens, although they were continually exposed to A. cajennense ticks. All human serum samples and ticks from both areas were negative by serologic assay and polymerase chain reaction, respectively. Our results indicate that surveys of horse serum are a useful method of BSF surveillance in areas where humans are exposed to A. cajennense ticks. In addition, we successfully performed experimental infection of A. cajennense ticks with R. parkeri.
• Subjects:
  Animals Antibodies, Bacterial DNA, Bacterial Dogs Female Fluorescent Antibody Technique, Indirect Horses Humans Male Polymerase Chain Reaction Rickettsia Infections Rural Population Tick Infestations Ticks

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• Source:
  Emerg Infect Dis. 11(2):265-270.
• Document Type:
  Journal Article
• Place as Subject:
  Brazil
• Volume:
  11
• Issue:
  2
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:38ccb39f01e1a0d9d0673800eaaff08cf64e7b791d22c64092729b4524d421c5
• Download URL:
  https://stacks.cdc.gov/view/cdc/15660/cdc_15660_DS1.pdf
• File Type:
  [PDF - 144.02 KB ]