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Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity

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 São Paulo, Brazil. Most of the horses and few dogs from BSF-endemic areas had serologic titers against Rickettsia r...

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Autores principales: 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.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Centers for Disease Control and Prevention 2005
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3320454/
https://www.ncbi.nlm.nih.gov/pubmed/15752445
http://dx.doi.org/10.3201/eid1102.040656
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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.
author_facet 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.
author_sort Sangioni, Luis A.
collection PubMed
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 São 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.
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spelling pubmed-33204542012-04-20 Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity 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. Emerg Infect Dis Research 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 São 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. Centers for Disease Control and Prevention 2005-02 /pmc/articles/PMC3320454/ /pubmed/15752445 http://dx.doi.org/10.3201/eid1102.040656 Text en https://creativecommons.org/licenses/by/4.0/This is a publication of the U.S. Government. This publication is in the public domain and is therefore without copyright. All text from this work may be reprinted freely. Use of these materials should be properly cited.
spellingShingle Research
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.
Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity
title Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity
title_full Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity
title_fullStr Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity
title_full_unstemmed Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity
title_short Rickettsial Infection in Animals and Brazilian Spotted Fever Endemicity
title_sort rickettsial infection in animals and brazilian spotted fever endemicity
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3320454/
https://www.ncbi.nlm.nih.gov/pubmed/15752445
http://dx.doi.org/10.3201/eid1102.040656
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