EPIDEMIOLOGICAL SURVEY OF SUPPOSED SPOTTED FEVER OUTBREAK

Authors

  • Márcio Eduardo Pereira Martins IF Goiano
  • Wilia Marta Elsner Diederichsen Brito IPTSP/UFG
  • Marcelo Bahia Labruna FMVZ-USP
  • Jonas Moraes Filho FMVZ-USP
  • Kenia Cristina Sousa-Martins
  • Rafael Porto Vieira IFGoiano

DOI:

https://doi.org/10.1590/cab17334947

Keywords:

Animal Epidemiology

Abstract

This study aimed to evaluate the suspition of spotted fever (SF) occurrence in Quirinopolis city (Goias State) through serological survey in human, dogs and horses samples, and identification of tick vectors. In 2007, indirect immunofluorescence antibody test (IFAT) was carried out for Rickettsia spp. in blood samples taken from 28 persons, related to the suspected case (a 3-year-old child who showed signs of rickettsial disease after exposure to ticks). Also, blood samples were collected from five dogs and 42 horses, from which only there horses (28.6%) were seropositive. The tick Amblyomma cajennense was not found. Seven humans were reactive to Rickettsia spp., most of them were paternal relatives of the suspected case. In 2008, in the same region, IFAT was performed on 30 human samples without clinical signs of SF and 50% of them were seropositive for Rickettsia spp. Additionally, blood samples were collected from 24 stray dogs, and one of the animals showed seropositivity. Serologic evidence of the contact between the bacteria of the genus Rickettsia with human and animal inhabitants from Quirinopolis city indicates that the SF or another rickettsial disease may be occurring in Goias State, Brazil.
Keywords: A. cajennense; antibodies; dogs; horses; human; Rickettsia.  

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Author Biography

Márcio Eduardo Pereira Martins, IF Goiano

O presente estudo objetivou avaliar a suspeita de ocorrência da febre maculosa (FM) em Quirinópolis-GO por meio de inquérito sorológico em amostras de humanos, cães e eqüinos e identificação de carrapatos vetores. Em 2007, foram realizadas reações de imunofluorescência indireta (RIFI) para Rickettsia spp. em amostras de sangue colhidas de 28 pessoas do grupo de convívio de um caso suspeito (uma criança de três anos que apresentou sinais de riquetsiose, após exposição a carrapatos). Dessas 28 pessoas, oito residiam em três propriedades rurais onde o caso suspeito esteve antes do quadro enfermo. Nessas propriedades rurais, também colheram-se amostras de sangue em 5 cães e 42 eqüinos, para os quais somente entre eqüinos houve soropositivos (28,6%). Não foi constatada a presença do carrapato Amblyomma cajennense, principal vetor de FM no Brasil. Sete indivíduos foram reagentes para Rickettsia spp., a maioria desses eram parentes paternos do caso suspeito. Os sinais e sintomas manifestados e exames laboratoriais do caso suspeito indicaram quadro clínico compatível com riquetsiose. Em 2008, na mesma região, foram realizadas RIFI em amostras de 30 humanos sem sinais clínicos de FM e constatou-se 50% de soropositivos para Rickettsia spp. Adicionalmente, colheram-se amostras de sangue de 24 cães errantes, havendo um cão soropositivo. A evidência sorológica do contato entre bactérias do gênero Rickettsia com habitantes humanos e animais de Quirinópolis indica que a FM ou outra riquetsiose possa estar ocorrendo no Estado de Goiás.

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Published

2016-07-29

How to Cite

MARTINS, M. E. P.; BRITO, W. M. E. D.; LABRUNA, M. B.; MORAES FILHO, J.; SOUSA-MARTINS, K. C.; PORTO VIEIRA, R. EPIDEMIOLOGICAL SURVEY OF SUPPOSED SPOTTED FEVER OUTBREAK. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 17, n. 3, p. 459–471, 2016. DOI: 10.1590/cab17334947. Disponível em: https://revistas.ufg.br/vet/article/view/34947. Acesso em: 22 nov. 2024.

Issue

Vol. 17 No. 3 (2016)

Section

Veterinary Medicine

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