A new focus of spotted fever caused by Rickettsia parkeri in Brazil

Authors

  • Nicole Oliveira de Moura Martiniano Martiniano Fundação Oswaldo Cruz, Laboratório de Referência Nacional em Vetores das Riquetsioses, Rio de Janeiro, Rio de Janeiro, Brazil http://orcid.org/0000-0003-3692-2157
  • Tayra Pereira Sato Fundação Oswaldo Cruz, Laboratório de Referência Nacional em Vetores das Riquetsioses, Rio de Janeiro, Rio de Janeiro, Brazil http://orcid.org/0000-0002-2903-9262
  • Vinicius Figueiredo Vizzoni Fundação Oswaldo Cruz, Laboratório de Referência Nacional em Vetores das Riquetsioses, Rio de Janeiro, Rio de Janeiro, Brazil http://orcid.org/0000-0002-7595-1607
  • Sheila de Figueiredo Ventura Secretaria Municipal de Saúde, Paraty, Rio de Janeiro, Brazil http://orcid.org/0000-0001-7068-7571
  • Stefan Vilges de Oliveira Universidade Federal de Uberlândia, Faculdade de Medicina, Uberlândia, Minas Gerais, Brazil Ministério da Saúde, Secretaria de Vigilância em Saúde, Brasília, Distrito Federal, Brazil http://orcid.org/0000-0002-5493-2765
  • Marinete Amorim Fundação Oswaldo Cruz, Laboratório de Referência Nacional em Vetores das Riquetsioses, Rio de Janeiro, Rio de Janeiro, Brazil http://orcid.org/0000-0003-4311-3374
  • Gilberto Salles Gazêta Fundação Oswaldo Cruz, Laboratório de Referência Nacional em Vetores das Riquetsioses, Rio de Janeiro, Rio de Janeiro, Brazil http://orcid.org/0000-0003-2939-5301

DOI:

https://doi.org/10.1590/S1678-9946202264022

Keywords:

Mild Rickettsiosis, Endemic focus, Inoculation Eschar, Amblyomma ovale, Atlantic rainforest biome, Rickettsia parkeri, strain Atlantic Rainforest

Abstract

Spotted fever (SF) is a tick-borne zoonosis caused by bacteria of the genus Rickettsia . The disease varies in severity from mild clinical forms to severe cases. In Brazil, Rickettsia rickettsii SF is the most serious rickettsiosis and can result in death if not diagnosed and treated at the onset of symptoms. The SF mild form is caused by Rickettsia parkeri strain Atlantic Rainforest, and this etiological agent has been reported in the South, Southeast and Northeast regions of the country, in areas of preserved or little antropized Atlantic Rainforest. Amblyomma ovale is the proven vector and dogs are the hosts associated with the bioagent cycle. During a SF case investigation in Paraty municipality, Rio de Janeiro State, an Atlantic Rainforest biome area in Southeastern Brazil, the human pathogen R. parkeri strain Atlantic Rainforest was detected by PCR in a sample of human skin inoculation eschar and in a female A. ovale tick collected from a dog. These results expand the known area of occurrence of this mild form rickettsiosis in Brazil. In addition, the results of the present study indicate the importance of implementing programs to control canine ectoparasites and to raise awareness of the risks of infection, signs and symptoms of SF caused by R. parkeri strain Atlantic Rainforest.

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Published

2022-05-16

How to Cite

Martiniano, N. O. de M. M., Sato, T. P. ., Vizzoni, V. F., Ventura, S. de F. ., Oliveira, S. V. de ., Amorim, M. ., & Gazêta, G. S. . (2022). A new focus of spotted fever caused by Rickettsia parkeri in Brazil. Revista Do Instituto De Medicina Tropical De São Paulo, 64, e22. https://doi.org/10.1590/S1678-9946202264022

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Original Article

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