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Molecular detection of hantavirus by Real- time PCR in wild rodents collected on Vale do Ribeira region, São Paulo State.

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Author(s):
Jansen de Araujo
Total Authors: 1
Document type: Doctoral Thesis
Press: São Paulo.
Institution: Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI)
Defense date:
Examining board members:
Edison Luiz Durigon; José Antonio Jerez; Marcelo Bahia Labruna; José Eduardo Levi; Mauricio Lacerda Nogueira
Advisor: Edison Luiz Durigon
Abstract

Current knowledge of the pathogenic hantavirus indicates that wild rodents are its primary natural reservoir. These rodents can eliminate large amounts of the virus through feces, urine and saliva. Human infection can occur through contact with rodents or inhalation of aerosols containing of the virus. Hantavirus cardiopulmonary syndrome (HCPS) has been reported in humans in many regions of Brazil. In view the number of cases of emerging diseases and re- emerging in recent decades, some regions to were select a detailed study on the distribution of these viral reservoirs, and consequently viral characterization. We developed specific primers to detect the presence of viral genomes using Real- time RT- PCR (Reverse- Transcriptase Polymerase Chain Raction). Altogether, our study analyzed 153 samples: 126 of wild rodents and domestic, of five different regions of São Paulo. 10 samples collected in Jacupiranga municipality, 61 in Teodoro Sampaio, 7 Salesópolis, 48 samples in Biritiba Mirim, 16 of Nazaré Paulista and 27 samples of the serum from patients from different sites of Minas Gerais State. Their samples were tested for hantavirus using the described SYBR Green-based real-time RT-PCR protocol and the specific primers. The presence of hantavirus RNA was detected in 10 rodents from Biritiba Mirim, 4 in Nazaré Paulista and 22 in serum of patients with hantaviruse. The surveillance by molecular tests in wild animals is essential to understood of hantavirus circulation in these regions. This SYBR Green real-time RTPCR method for detection of hantavirus may be useful for surveying hantaviruses in Brazil. (AU)