Patterns of influenza infections among different risk groups in Brazil
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | http://repositorio.unifesp.br/11600/42879 http://dx.doi.org/10.1590/S1413-86702007000400005 |
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 Sao 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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Bellei, Nancy Cristina Junqueira [UNIFESP]Carraro, Emerson [UNIFESP]Perosa, Ana Helena Sitta [UNIFESP]Granato, Celso Francisco Hernandes [UNIFESP]Universidade Federal de São Paulo (UNIFESP)2018-06-15T14:04:33Z2018-06-15T14:04:33Z2007-08-01Brazilian Journal Of Infectious Diseases. Salvador: Contexto, v. 11, n. 4, p. 399-402, 2007.1413-8670http://repositorio.unifesp.br/11600/42879http://dx.doi.org/10.1590/S1413-86702007000400005S1413-86702007000400005.pdfS1413-8670200700040000510.1590/S1413-86702007000400005WOS:000254388600005Influenza 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 Sao 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.Univ Fed Sao Paulo, Dept Med, Infect Dis Unit, Clin Virol Lab, Sao Paulo, BrazilUniv Fed Sao Paulo, Dept Med, Infect Dis Unit, Clin Virol Lab, Sao Paulo, BrazilWeb of Science399-402engContextoBrazilian Journal Of Infectious Diseasesinfluenzarisk groupsrespiratory viral infectionPatterns of influenza infections among different risk groups in Brazilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP11600/428792021-10-05 22:02:41.248metadata only accessoai:repositorio.unifesp.br:11600/42879Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652021-10-06T01:02:41Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Patterns of influenza infections among different risk groups in Brazil |
title |
Patterns of influenza infections among different risk groups in Brazil |
spellingShingle |
Patterns of influenza infections among different risk groups in Brazil Bellei, Nancy Cristina Junqueira [UNIFESP] influenza risk groups respiratory viral infection |
title_short |
Patterns of influenza infections among different risk groups in Brazil |
title_full |
Patterns of influenza infections among different risk groups in Brazil |
title_fullStr |
Patterns of influenza infections among different risk groups in Brazil |
title_full_unstemmed |
Patterns of influenza infections among different risk groups in Brazil |
title_sort |
Patterns of influenza infections among different risk groups in Brazil |
author |
Bellei, Nancy Cristina Junqueira [UNIFESP] |
author_facet |
Bellei, Nancy Cristina Junqueira [UNIFESP] Carraro, Emerson [UNIFESP] Perosa, Ana Helena Sitta [UNIFESP] Granato, Celso Francisco Hernandes [UNIFESP] |
author_role |
author |
author2 |
Carraro, Emerson [UNIFESP] Perosa, Ana Helena Sitta [UNIFESP] Granato, Celso Francisco Hernandes [UNIFESP] |
author2_role |
author author author |
dc.contributor.institution.none.fl_str_mv |
Universidade Federal de São Paulo (UNIFESP) |
dc.contributor.author.fl_str_mv |
Bellei, Nancy Cristina Junqueira [UNIFESP] Carraro, Emerson [UNIFESP] Perosa, Ana Helena Sitta [UNIFESP] Granato, Celso Francisco Hernandes [UNIFESP] |
dc.subject.eng.fl_str_mv |
influenza risk groups respiratory viral infection |
topic |
influenza risk groups respiratory viral infection |
description |
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 Sao 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. |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007-08-01 |
dc.date.accessioned.fl_str_mv |
2018-06-15T14:04:33Z |
dc.date.available.fl_str_mv |
2018-06-15T14:04:33Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Brazilian Journal Of Infectious Diseases. Salvador: Contexto, v. 11, n. 4, p. 399-402, 2007. |
dc.identifier.uri.fl_str_mv |
http://repositorio.unifesp.br/11600/42879 http://dx.doi.org/10.1590/S1413-86702007000400005 |
dc.identifier.issn.none.fl_str_mv |
1413-8670 |
dc.identifier.file.none.fl_str_mv |
S1413-86702007000400005.pdf |
dc.identifier.scielo.none.fl_str_mv |
S1413-86702007000400005 |
dc.identifier.doi.none.fl_str_mv |
10.1590/S1413-86702007000400005 |
dc.identifier.wos.none.fl_str_mv |
WOS:000254388600005 |
identifier_str_mv |
Brazilian Journal Of Infectious Diseases. Salvador: Contexto, v. 11, n. 4, p. 399-402, 2007. 1413-8670 S1413-86702007000400005.pdf S1413-86702007000400005 10.1590/S1413-86702007000400005 WOS:000254388600005 |
url |
http://repositorio.unifesp.br/11600/42879 http://dx.doi.org/10.1590/S1413-86702007000400005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.none.fl_str_mv |
Brazilian Journal Of Infectious Diseases |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
399-402 |
dc.publisher.none.fl_str_mv |
Contexto |
publisher.none.fl_str_mv |
Contexto |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UNIFESP instname:Universidade Federal de São Paulo (UNIFESP) instacron:UNIFESP |
instname_str |
Universidade Federal de São Paulo (UNIFESP) |
instacron_str |
UNIFESP |
institution |
UNIFESP |
reponame_str |
Repositório Institucional da UNIFESP |
collection |
Repositório Institucional da UNIFESP |
repository.name.fl_str_mv |
Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP) |
repository.mail.fl_str_mv |
|
_version_ |
1802764157458579456 |