Data/hora: 03/06/2024 07:26:37

Provedor de dados: 	55	
País: 	Brazil	
Título: 	Patterns of influenza infections among different risk groups in Brazil	
Autores: 	Bellei,Nancy; Carraro,Emerson; Perosa,Ana; Granato,Celso.	
Data: 	2007-08-01	
Ano: 	2007	
Palavras-chave: 	Influenza; Risk groups; Respiratory viral infection.	
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.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000400005	
Editor: 	Brazilian Society of Infectious Diseases	
Relação: 	10.1590/S1413-86702007000400005	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Infectious Diseases  v.11 n.4 2007	
Fonte: 	info:eu-repo/semantics/openAccess