Effectiveness of the Brazilian influenza vaccination policy, a systematic review
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Publication Date: | 2010 |
Other Authors: | |
Format: | Article |
Language: | eng |
Source: | Revista do Instituto de Medicina Tropical de São Paulo |
Download full: | https://www.revistas.usp.br/rimtsp/article/view/31330 |
Summary: | Since 1999, Brazil has undertaken annual influenza vaccine campaigns, free of charge, targeting the elderly population, health professionals, and immune-deficient patients. We conducted a systematic review of literature in order to evaluate the effectiveness of the initiative. We used the keywords influenza, vaccine, Brazil and effectiveness to search the main databases. Thirty-one studies matched our inclusion and exclusion criteria. Influenza vaccine coverage among the elderly is high, though not as high as suggested by the official figures. Estimates on effectiveness are scarce. The majority come from ecological studies that show a modest reduction in mortality and hospital admissions due to influenza-related causes. Such reduction is not evident in the North and Northeastern states of Brazil, a finding that is probably related to the different seasonal pattern of influenza in equatorial and tropical regions. Brazilian epidemiologists still owe society better-designed studies addressing the effectiveness of influenza vaccine campaigns. |
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Effectiveness of the Brazilian influenza vaccination policy, a systematic review Efetividade da política brasileira de vacinação contra influenza, uma revisão sistemática InfluenzaBrazilVaccinesEffectiveness Since 1999, Brazil has undertaken annual influenza vaccine campaigns, free of charge, targeting the elderly population, health professionals, and immune-deficient patients. We conducted a systematic review of literature in order to evaluate the effectiveness of the initiative. We used the keywords influenza, vaccine, Brazil and effectiveness to search the main databases. Thirty-one studies matched our inclusion and exclusion criteria. Influenza vaccine coverage among the elderly is high, though not as high as suggested by the official figures. Estimates on effectiveness are scarce. The majority come from ecological studies that show a modest reduction in mortality and hospital admissions due to influenza-related causes. Such reduction is not evident in the North and Northeastern states of Brazil, a finding that is probably related to the different seasonal pattern of influenza in equatorial and tropical regions. Brazilian epidemiologists still owe society better-designed studies addressing the effectiveness of influenza vaccine campaigns. Desde 1999 o Brasil realiza campanhas anuais de vacinação contra influenza. A vacinação é gratuita, e tem como grupos alvo os idosos, os profissionais de saúde e os pacientes com comprometimento imunitário. Nós realizamos uma revisão sistemática da literatura, com o propósito de avaliar a efetividade desta iniciativa. Foram usadas as palavras chave influenza, vacina, Brasil e efetividade, para a busca nas bases de dados mais relevantes. Trinta e um estudos se encaixaram nos nossos critérios de inclusão e exclusão. A cobertura vacinal nos idosos é alta, porém não tão alta como apresentado nos dados oficiais. Estimativas de efetividade são escassas. A maioria delas vem de estudos ecológicos, que demonstram um modesto efeito na redução da mortalidade e internações hospitalares por causas relacionadas à influenza. Esta redução não se evidencia nos estados do Norte e Nordeste do Brasil, achado que provavelmente relaciona-se ao padrão distinto de sazonalidade da influenza nas regiões equatoriais e tropicais. Os epidemiologistas brasileiros ainda devem à sociedade estudos com desenhos mais adequados à análise da efetividade das campanhas de vacinação contra influenza. Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo2010-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/rimtsp/article/view/31330Revista do Instituto de Medicina Tropical de São Paulo; Vol. 52 No. 4 (2010); 175-181 Revista do Instituto de Medicina Tropical de São Paulo; Vol. 52 Núm. 4 (2010); 175-181 Revista do Instituto de Medicina Tropical de São Paulo; v. 52 n. 4 (2010); 175-181 1678-99460036-4665reponame:Revista do Instituto de Medicina Tropical de São Pauloinstname:Instituto de Medicina Tropical (IMT)instacron:IMTenghttps://www.revistas.usp.br/rimtsp/article/view/31330/33215Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Pauloinfo:eu-repo/semantics/openAccessLuna, Expedito J.A.Gattás, Vera L.2012-07-07T19:31:43Zoai:revistas.usp.br:article/31330Revistahttp://www.revistas.usp.br/rimtsp/indexPUBhttps://www.revistas.usp.br/rimtsp/oai||revimtsp@usp.br1678-99460036-4665opendoar:2022-12-13T16:52:00.338319Revista do Instituto de Medicina Tropical de São Paulo - Instituto de Medicina Tropical (IMT)true |
dc.title.none.fl_str_mv |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review Efetividade da política brasileira de vacinação contra influenza, uma revisão sistemática |
title |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review |
spellingShingle |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review Luna, Expedito J.A. Influenza Brazil Vaccines Effectiveness |
title_short |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review |
title_full |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review |
title_fullStr |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review |
title_full_unstemmed |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review |
title_sort |
Effectiveness of the Brazilian influenza vaccination policy, a systematic review |
author |
Luna, Expedito J.A. |
author_facet |
Luna, Expedito J.A. Gattás, Vera L. |
author_role |
author |
author2 |
Gattás, Vera L. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Luna, Expedito J.A. Gattás, Vera L. |
dc.subject.por.fl_str_mv |
Influenza Brazil Vaccines Effectiveness |
topic |
Influenza Brazil Vaccines Effectiveness |
description |
Since 1999, Brazil has undertaken annual influenza vaccine campaigns, free of charge, targeting the elderly population, health professionals, and immune-deficient patients. We conducted a systematic review of literature in order to evaluate the effectiveness of the initiative. We used the keywords influenza, vaccine, Brazil and effectiveness to search the main databases. Thirty-one studies matched our inclusion and exclusion criteria. Influenza vaccine coverage among the elderly is high, though not as high as suggested by the official figures. Estimates on effectiveness are scarce. The majority come from ecological studies that show a modest reduction in mortality and hospital admissions due to influenza-related causes. Such reduction is not evident in the North and Northeastern states of Brazil, a finding that is probably related to the different seasonal pattern of influenza in equatorial and tropical regions. Brazilian epidemiologists still owe society better-designed studies addressing the effectiveness of influenza vaccine campaigns. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/rimtsp/article/view/31330 |
url |
https://www.revistas.usp.br/rimtsp/article/view/31330 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/rimtsp/article/view/31330/33215 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Paulo info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2018 Revista do Instituto de Medicina Tropical de São Paulo |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo |
publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto de Medicina Tropical de São Paulo |
dc.source.none.fl_str_mv |
Revista do Instituto de Medicina Tropical de São Paulo; Vol. 52 No. 4 (2010); 175-181 Revista do Instituto de Medicina Tropical de São Paulo; Vol. 52 Núm. 4 (2010); 175-181 Revista do Instituto de Medicina Tropical de São Paulo; v. 52 n. 4 (2010); 175-181 1678-9946 0036-4665 reponame:Revista do Instituto de Medicina Tropical de São Paulo instname:Instituto de Medicina Tropical (IMT) instacron:IMT |
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Instituto de Medicina Tropical (IMT) |
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IMT |
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IMT |
reponame_str |
Revista do Instituto de Medicina Tropical de São Paulo |
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Revista do Instituto de Medicina Tropical de São Paulo |
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Revista do Instituto de Medicina Tropical de São Paulo - Instituto de Medicina Tropical (IMT) |
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