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Diagnosis of hantavirus infection in humans and rodents in Ribeirão Preto, State of São Paulo, Brazil / Diagnóstico de infecção por hantavírus em humanos e roedores em Ribeirão Preto, Estado de São Paulo
Figueiredo, Glauciane Garcia de; Borges, Alessandra Abel; Campos, Gelse Mazzoni; Machado, Alex Martins; Saggioro, Fabiano Pinto; Sabino Júnior, Gilberto dos Santos; Badra, Soraya Jabur; Ortiz, Alberto Anastacio Amarilla; Figueiredo, Luiz Tadeu Moraes.
  • Figueiredo, Glauciane Garcia de; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
  • Borges, Alessandra Abel; Federal University of Alagoas. Virology and Immunology Research, Biological Sciences and Health Institute. Maceió. BR
  • Campos, Gelse Mazzoni; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
  • Machado, Alex Martins; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
  • Saggioro, Fabiano Pinto; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
  • Sabino Júnior, Gilberto dos Santos; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
  • Badra, Soraya Jabur; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
  • Ortiz, Alberto Anastacio Amarilla; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
  • Figueiredo, Luiz Tadeu Moraes; School of Medicine of the University of São Paulo. Virology Research Center. Ribeirão Preto. BR
Rev. Soc. Bras. Med. Trop ; 43(4): 348-354, jul.-ago. 2010. ilus, tab
Article in English | LILACS | ID: lil-555994
ABSTRACT

INTRODUCTION:

Hantavirus pulmonary and cardiovascular syndrome (HPCS) is an emerging serious disease in the Americas. Hantaviruses (Bunyaviridae) are the causative agents of this syndrome and are mainly transmitted through inhalation of aerosols containing the excreta of wild rodents. In the Ribeirão Preto region (state of São Paulo, Brazil), HPCS has been reported since 1998, caused by the Araraquara virus (ARAV), for which Necromys lasiurus is the rodent reservoir. This study aimed to show diagnostic results relating to infection in humans and rodents, obtained at the Virology Research Center of the Ribeirão Preto School of Medicine, University of São Paulo, between 2005 and 2008.

METHODS:

HPCS was diagnosed by means of ELISA and/or RT-PCR in 11 (21.2 percent) out of 52 suspected cases, and 54.4 percent of these were fatal. Furthermore, 595 wild rodents (Necromys lasiurus, Akodon sp, Calomys tener and Oligoryzomys sp) were caught between 2005 and 2008.

RESULTS:

Fifteen (2.5 percent) of these rodents presented antibodies for hantavirus, as follows Necromys lasiurus (4 percent), Calomys tener (1.9 percent) and Akodon sp (1.5 percent). Nucleotide sequences obtained through RT-PCR from one HPCS patient and one Calomys tener rodent were compared with hantavirus sequences from GenBank, which showed that both were homologous with ARAV.

CONCLUSIONS:

This work corroborates previous studies showing that ARAV is the hantavirus causing HPCS in the Ribeirão Preto region. It also shows that rodents infected with hantavirus represent a constant risk of transmission of this virus to man.
RESUMO

INTRODUÇÃO:

A síndrome pulmonar e cardiovascular por hantavírus é uma doença grave emergente nas Américas. Os hantavírus, Bunyaviridae, são os agentes causadores desta síndrome, causadas, principalmente, pela inalação de aerossóis dos dejetos de roedores silvestres. Na região de Ribeirão Preto, a SPCVH, causada pelo vírus Araraquara, tem sido diagnosticada, desde 1998. O roedor-reservatório do ARAV é o Necromys lasiurus. Este tem como objetivo mostrar os resultados de diagnósticos da infecção de humanos e roedores obtidos no Centro de Pesquisa em Virologia da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, durante o período de 2005 a 2008.

MÉTODOS:

A síndrome pulmonar e cardiovascular por hantavírus foi diagnosticada, por ELISA e/ou RT-PCR, em 11 (21,2 por cento) dos 52 casos suspeitos e destes, 54,4 por cento foram casos fatais. Além disso, também, de 2005 a 2008, foram capturados 595 roedores silvestres, Necromys lasiurus, Akodon sp, Calomys tener e Oligoryzomys sp.

RESULTADOS:

Quinze (2,5 por cento) destes roedores apresentaram anticorpos para hantavírus. As soropositividades intraespécie ou gênero foram 4 por cento para Necromys lasiurus, 1,9 por cento para Calomys tener e 1,5 por cento para Akodon sp. Sequências nucleotídicas, obtidas pela RT-PCR de um paciente com SPCVH e de um roedor Calomys tener, foram comparadas com sequências de hantavírus do GenBank, o que mostrou que ambas tinham homologia com o ARAV.

CONCLUSÕES:

Este trabalho corrobora outros estudos que mostram que o ARAV é o hantavírus causador da SPCVH, na região de Ribeirão Preto, além de mostrar que roedores infectados por hantavírus representam um risco constante de transmissão desses vírus para o homem.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Rodent Diseases / Disease Reservoirs / Orthohantavirus / Hantavirus Pulmonary Syndrome Type of study: Diagnostic study Limits: Animals / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: Rev. Soc. Bras. Med. Trop Journal subject: Tropical Medicine Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Alagoas/BR / School of Medicine of the University of São Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Rodent Diseases / Disease Reservoirs / Orthohantavirus / Hantavirus Pulmonary Syndrome Type of study: Diagnostic study Limits: Animals / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: Rev. Soc. Bras. Med. Trop Journal subject: Tropical Medicine Year: 2010 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Alagoas/BR / School of Medicine of the University of São Paulo/BR