| Registro completo |
| Provedor de dados: |
BJID
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| País: |
Brazil
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| Título: |
Patterns of influenza infections among different risk groups in Brazil
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| Autores: |
Bellei,Nancy
Carraro,Emerson
Perosa,Ana
Granato,Celso
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| Data: |
2007-08-01
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| Ano: |
2007
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| Palavras-chave: |
Influenza
Risk groups
Respiratory viral infection
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| Resumo: |
Influenza virus infections are associated with high morbidity and mortality. Influenza activity varies worldwide, and regional detection is influenced by geographic conditions, demographic and patient-risk factors. We assessed influenza activity and patterns of seasonality during three consecutive years (2001-2003) in three risk groups in São Paulo city. Four-hundred-twelve outpatients with acute respiratory infection were subjected to epidemiological, clinical and laboratory investigations; these included community population (N=140), health-care workers (N=203), and renal-transplanted patients (N=69). Nasal wash samples were tested by direct fluorescent assay for influenza, parainfluenza, adenovirus, and respiratory syncytial virus. Overall Influenza positivity was 21%, and a progressive decline was observed in all groups over time. Influenza A and B co-circulated at the same time in 2001 and 2002, but not in 2003. Low influenza-vaccination rates (19%) were reported by health-care workers. Unexpected low levels of etiological agents were detected in renal-transplanted patients, and infected cases were less symptomatic than immunocompetent patients. Based on this study, we conclude that health-care worker-immunization programs should be implemented and the clinical patterns of infected influenza patients should be used as a guide for better case-definition criteria for adequate influenza surveillance, particularly for renal-transplant patients.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000400005
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| Editor: |
Brazilian Society of Infectious Diseases
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| Relação: |
10.1590/S1413-86702007000400005
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Infectious Diseases v.11 n.4 2007
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| Direitos: |
info:eu-repo/semantics/openAccess
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