Navegando por Autor "CARRARO, Emerson"

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Acesso aberto (Open Access)
Frequency of human bocavirus respiratory infections among at-risk patients in São Paulo, Brazil
(Universidade Federal do Pará, 2012-12) CACCIA, Elaine Regina Baptista; WATANABE, Aripuanã Sakurada Aranha; CARRARO, Emerson; LEAL, Elcio de Souza; GRANATO, Celso Francisco Hernandes; BELLEI, Nancy Cristina Junqueira
BACKGROUND AND OBJECTIVES: Human Bocavirus (HBoV) has been described since 2005 as an etiological agent of respiratory virus infections. From 2001 to 2008 we investigated the etiology of HBoV among adults and children in different groups at risk of presenting complications arising from acute respiratory infection, the investigation was carried out in a tertiary hospital health care system in Brazil. METHODS: HBoV DNA was assayed in 598 respiratory samples from community and hospitalized patients by PCR. RESULTS: Of the 598 tested samples, 2.44% (8/328) of children, including five children with heart disease, and 0.4% (1/270) of adult bone-marrow-transplant were HBoV positive. CONCLUSIONS: These data suggested lower HBoV frequency among different at-risk patients and highlights the need to better understand the real role of HBoV among acute respiratory symptomatic patients.
Acesso aberto (Open Access)
Viral etiology among the elderly presenting acute respiratory infection during the influenza season
(Universidade Federal do Pará, 2011-02) WATANABE, Aripuanã Sakurada Aranha; CARRARO, Emerson; CANDEIAS, João Manuel Grisi; CORDEIRO, Maria Rita Donalísio; LEAL, Elcio de Souza; GRANATO, Celso Francisco Hernandes; BELLEI, Nancy Cristina Junqueira
Introduction: Acute respiratory tract infections are the most common illness in all individuals. Rhinoviruses have been reported as the etiology of more than 50% of respiratory tract infections worldwide. The study prospectively evaluated 47 elderly individuals from a group of 384 randomly assigned for acute respiratory viral infections (cold or flu) and assessed the occurrence of human rhinovirus (HRV), influenza A and B, respiratory syncytial virus and metapneumovirus (hMPV) in Botucatu, State of São Paulo, Brazil. Methods: Forty-nine nasal swabs collected from 47 elderly individuals following inclusion visits from 2002 to 2003 were tested by GenScan RT-PCR. HRV-positive samples were sequenced for phylogenetic analysis. Results: No sample was positive for influenza A/B or RSV. HRV was detected in 28.6% (14/47) and hMPV in 2% (1/47). Of 14 positive samples, 9 isolates were successfully sequenced, showing the follow group distribution: 6 group A, 1 group B and 2 group C HRVs. Conclusions: The high incidence of HRV during the months of the influenza season requires further study regarding HRV infection impact on respiratory complications among this population. Infection caused by HRV is very frequent and may contribute to increasing the already high demand for healthcare during the influenza season.