Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tede/3551 |
Resumo: | Estimates indicate a total of 240 million chronic hepatitis B carriers worldwide. In Brazil, rural settlements present adverse life conditions that favor the acquisition of health problems, such as the hepatitis B virus (HBV). The objective of the present study was to investigate the epidemiology of the infections caused by the hepatitis B and D viruses in people living in settlements in the southwest region of the state of Goiás. This is an observational, analytical, cross-sectional study, with a subsequent cohort of susceptible subjects for vaccination against HBV, assessment of adherence and vaccine response. In the period from May to July of 2011, 467 subjects were selected from seven settlements in the southwest of Goiás. All subjects were interviewed and tested for the detection of the serological markers HBsAg, anti-HBc and anti-HBs, by means of the enzyme-linked immunosorbent assay (ELISA). Reactive HBsAg samples were tested for total anti-HDV and IgM, by means of the ELISA, submitted to the detection of the HBV DNA by semi-nested PCR and genotyped by sequencing. Chemiluminescent microparticle immunoassay was used for the quantitative determination of anti-HBs. The research proposal was approved by the Research Ethics Committee of the Federal University of Goiás. Of the total sample, 52.2% were men, 57.8% were married and 49% had less than five years of education. Most subjects were from cities in the midwest region (81.6%) and were older than 19 years of age (73.7%). Overall prevalence for infection by the HBV was 10.9% (51/467), being 0.8% (4/467) for HBsAg, 7.9% (37/467) for anti-HBc and anti- HBs, and 2.1% (10/467) for anti-HBc. Moreover, 19.3% of the people living in settlements presented isolated positivity for the anti-HBs marker, which indicates they were previously vaccinated against hepatitis B. The four reactive HBV DNA samples were classified as subgenotype A1 (3/4) and D3 (1/4). The male gender (adjusted OR: 2.65; p= 0.007), age (adjusted OR: 1.07; p= 0.000), history of transfusion (adjusted OR: 2.52; p= 0.025) and greater period of time living in the settlements (adjusted OR: 1.10; p= 0.026) were variables associated with the HBV. A total of 181 subjects susceptible to the infection started vaccine against hepatitis B, but only 106 (58.6%; 106/181) completed the vaccine scheme. Of these, it was possible to assess the vaccine response in 77 subjects, and 68.8% (53/77) presented protective titers of anti-HBs. Of those subjects living in the settlements who did not respond to the vaccine, a greater proportion was male, had more than 40 years and was smokers (p< 0.001). No subject presented positivity for the anti-HDV marker. The results of this study evidence the need for effective strategies to prevent hepatitis B in the studied settlements, emphasizing vaccine against hepatitis. In light of the low vaccine response against this infection in older subjects, more immunogenic schemes are suggested, so as to induce a protective vaccine response. |
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Teles, Sheila Araujohttp://lattes.cnpq.br/4975298732179917Teles, Sheila AraujoSaddi, Vera AparecidaCarneiro, Megmar Aparecida dos SantosJunqueira, Ana Luíza NetoCastro, Ana Rita Coimbra Motta dehttp://lattes.cnpq.br/0112036159794570Caetano, Karlla Antonieta Amorim2014-11-06T11:36:06Z2014-07-22CAETANO, Karlla Antonieta Amorim. Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes. 2014. 124 f. Tese (Doutorado em Ciências da Saúde) - Universidade Federal de Goiás, Goiânia,2014.http://repositorio.bc.ufg.br/tede/handle/tede/3551Estimates indicate a total of 240 million chronic hepatitis B carriers worldwide. In Brazil, rural settlements present adverse life conditions that favor the acquisition of health problems, such as the hepatitis B virus (HBV). The objective of the present study was to investigate the epidemiology of the infections caused by the hepatitis B and D viruses in people living in settlements in the southwest region of the state of Goiás. This is an observational, analytical, cross-sectional study, with a subsequent cohort of susceptible subjects for vaccination against HBV, assessment of adherence and vaccine response. In the period from May to July of 2011, 467 subjects were selected from seven settlements in the southwest of Goiás. All subjects were interviewed and tested for the detection of the serological markers HBsAg, anti-HBc and anti-HBs, by means of the enzyme-linked immunosorbent assay (ELISA). Reactive HBsAg samples were tested for total anti-HDV and IgM, by means of the ELISA, submitted to the detection of the HBV DNA by semi-nested PCR and genotyped by sequencing. Chemiluminescent microparticle immunoassay was used for the quantitative determination of anti-HBs. The research proposal was approved by the Research Ethics Committee of the Federal University of Goiás. Of the total sample, 52.2% were men, 57.8% were married and 49% had less than five years of education. Most subjects were from cities in the midwest region (81.6%) and were older than 19 years of age (73.7%). Overall prevalence for infection by the HBV was 10.9% (51/467), being 0.8% (4/467) for HBsAg, 7.9% (37/467) for anti-HBc and anti- HBs, and 2.1% (10/467) for anti-HBc. Moreover, 19.3% of the people living in settlements presented isolated positivity for the anti-HBs marker, which indicates they were previously vaccinated against hepatitis B. The four reactive HBV DNA samples were classified as subgenotype A1 (3/4) and D3 (1/4). The male gender (adjusted OR: 2.65; p= 0.007), age (adjusted OR: 1.07; p= 0.000), history of transfusion (adjusted OR: 2.52; p= 0.025) and greater period of time living in the settlements (adjusted OR: 1.10; p= 0.026) were variables associated with the HBV. A total of 181 subjects susceptible to the infection started vaccine against hepatitis B, but only 106 (58.6%; 106/181) completed the vaccine scheme. Of these, it was possible to assess the vaccine response in 77 subjects, and 68.8% (53/77) presented protective titers of anti-HBs. Of those subjects living in the settlements who did not respond to the vaccine, a greater proportion was male, had more than 40 years and was smokers (p< 0.001). No subject presented positivity for the anti-HDV marker. The results of this study evidence the need for effective strategies to prevent hepatitis B in the studied settlements, emphasizing vaccine against hepatitis. In light of the low vaccine response against this infection in older subjects, more immunogenic schemes are suggested, so as to induce a protective vaccine response.Estima-se em 240 milhões o número de portadores crônicos de hepatite B. No Brasil, as comunidades rurais de assentamentos apresentam condições de vida adversas que favorecem a aquisição de agravos, como do HBV. O objetivo do presente estudo foi investigar a epidemiologia das infecções pelos vírus das hepatites B e D em assentados do sudoeste de Goiás. Trata-se de um estudo observacional, analítico, de corte transversal, em que posteriormente foi formada uma coorte de indivíduos suscetíveis para a vacinação contra HBV, avaliação da adesão e resposta vacinal. No período de maio a julho de 2011, foram recrutados 467 indivíduos de sete assentamentos do sudoeste goiano. Todos foram entrevistados e testados para a detecção dos marcadores sorológicos HBsAg, anti- HBc e anti-HBs pelo ensaio imunoenzimático (ELISA). As amostras HBsAg reagentes foram testadas para o anti-HDV total e IgM, pelo ELISA, submetidas à detecção do HBV DNA por semi-nested PCR e genotipadas por sequenciamento. Para a determinação quantitativa do anti-HBs empregou-se o imunoensaio de micropartículas por quimioluminescência. O presente estudo foi aprovado pelo Comitê de Ética em Pesquisa da Universidade Federal de Goiás. Do total, 52,2% eram do sexo masculino, 57,8% casados e 49% possuía menos de cinco anos de estudo. A maioria era natural de municípios da Região Centro-Oeste (81,6%) e possuía mais de 19 anos de idade (73,7%). A prevalência global para a infecção pelo HBV foi de 10,9% (51/467), sendo 0,8% (4/467) para HBsAg, 7,9% (37/467) para anti-HBc e anti-HBs, e 2,1% (10/467) para anti-HBc. Também, 19,3% dos assentados apresentaram positividade isolada para o marcador anti-HBs, indicando vacinação prévia contra hepatite B. As quatro amostras HBV DNA reagentes foram classificadas como subgenótipo A1 (3/4) e D3 (1/4). Observou-se que sexo masculino (OR ajustado: 2,65; p= 0,007), idade (OR ajustado: 1,07; p= 0.000), história de transfusão (OR ajustado: 2,52; p= 0,025) e maior tempo de moradia nos assentamentos (OR ajustado: 1,10; p= 0,026) foram variáveis associadas ao HBV. Um total de 181 assentados suscetíveis à infecção iniciaram a vacinação contra hepatite B, mas apenas 106 (58,6%; 106/181) completaram o esquema vacinal. Desses, em 77 foi possível avaliar a resposta vacinal, sendo que 68,8% (53/77) apresentaram títulos protetores de anti-HBs. Verificou-se uma proporção maior de não respondedores nos assentados do sexo masculino, com mais de 40 anos e tabagistas (p< 0,001). Nenhum indivíduo apresentou positividade para o marcador anti-HDV. Os resultados evidenciam a necessidade de estratégias efetivas de prevenção da hepatite B nos assentamentos estudados, com ênfase na vacinação contra hepatite. Ainda, diante da baixa resposta vacinal contra esta infecção em indivíduos mais velhos, sugere-se esquemas mais imunogênicos, que induzam uma resposta vacinal protetora.Submitted by Cássia Santos (cassia.bcufg@gmail.com) on 2014-10-21T12:18:38Z No. of bitstreams: 3 Tese Karlla Antonieta Amorim Caetano - 2014.pdf: 3924004 bytes, checksum: d7ba7c1ee906d0c858ef16bd5981e6f6 (MD5) Anexos - Tese Karlla Antonieta Amorim Caetano - 2014.pdf: 6385883 bytes, checksum: fb90963b122614948d1d35bfe7554d6e (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5)Rejected by Luciana Ferreira (lucgeral@gmail.com), reason: Cássia, o nome do arquivo, segundo as instruções deve ser: : Dissertação - Maria Flores Silva - 2014”, “Tese - Maria Flores Silva - 2014. Você está esquecendo de colocar o traço após Tese ou Dissertação. Na citação está faltando a data final. ex. PIMENTEL, Tatiane Dias. Entre a televisão e a internet: o jornalismo e o exercício da cidadania. 2012. 150 f. Dissertação (Mestrado em Comunicação) - Universidade Federal de Goiás, Goiânia, 2012. on 2014-10-23T11:29:29Z (GMT)Submitted by Cássia Santos (cassia.bcufg@gmail.com) on 2014-11-06T11:25:56Z No. of bitstreams: 3 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Tese Karlla Antonieta Amorim Caetano - 2014.pdf: 3924004 bytes, checksum: d7ba7c1ee906d0c858ef16bd5981e6f6 (MD5) Anexos - Tese Karlla Antonieta Amorim Caetano - 2014.pdf: 6385883 bytes, checksum: fb90963b122614948d1d35bfe7554d6e (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2014-11-06T11:36:06Z (GMT) No. of bitstreams: 3 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Tese Karlla Antonieta Amorim Caetano - 2014.pdf: 3924004 bytes, checksum: d7ba7c1ee906d0c858ef16bd5981e6f6 (MD5) Anexos - Tese Karlla Antonieta Amorim Caetano - 2014.pdf: 6385883 bytes, checksum: fb90963b122614948d1d35bfe7554d6e (MD5)Made available in DSpace on 2014-11-06T11:36:06Z (GMT). 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dc.title.por.fl_str_mv |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes |
dc.title.alternative.eng.fl_str_mv |
Epidemiology of infection by hepatitis B virus in settlments in Goiás: grants for prevention and control in emerging populations |
title |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes |
spellingShingle |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes Caetano, Karlla Antonieta Amorim Epidemiologia Hepatite B Vacinas contra hepatite B População rural Epidemiology Hepatitis B Hepatitis B vaccines Rural population CIENCIAS DA SAUDE |
title_short |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes |
title_full |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes |
title_fullStr |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes |
title_full_unstemmed |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes |
title_sort |
Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes |
author |
Caetano, Karlla Antonieta Amorim |
author_facet |
Caetano, Karlla Antonieta Amorim |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Teles, Sheila Araujo |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/4975298732179917 |
dc.contributor.referee1.fl_str_mv |
Teles, Sheila Araujo |
dc.contributor.referee2.fl_str_mv |
Saddi, Vera Aparecida |
dc.contributor.referee3.fl_str_mv |
Carneiro, Megmar Aparecida dos Santos |
dc.contributor.referee4.fl_str_mv |
Junqueira, Ana Luíza Neto |
dc.contributor.referee5.fl_str_mv |
Castro, Ana Rita Coimbra Motta de |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0112036159794570 |
dc.contributor.author.fl_str_mv |
Caetano, Karlla Antonieta Amorim |
contributor_str_mv |
Teles, Sheila Araujo Teles, Sheila Araujo Saddi, Vera Aparecida Carneiro, Megmar Aparecida dos Santos Junqueira, Ana Luíza Neto Castro, Ana Rita Coimbra Motta de |
dc.subject.por.fl_str_mv |
Epidemiologia Hepatite B Vacinas contra hepatite B População rural |
topic |
Epidemiologia Hepatite B Vacinas contra hepatite B População rural Epidemiology Hepatitis B Hepatitis B vaccines Rural population CIENCIAS DA SAUDE |
dc.subject.eng.fl_str_mv |
Epidemiology Hepatitis B Hepatitis B vaccines Rural population |
dc.subject.cnpq.fl_str_mv |
CIENCIAS DA SAUDE |
description |
Estimates indicate a total of 240 million chronic hepatitis B carriers worldwide. In Brazil, rural settlements present adverse life conditions that favor the acquisition of health problems, such as the hepatitis B virus (HBV). The objective of the present study was to investigate the epidemiology of the infections caused by the hepatitis B and D viruses in people living in settlements in the southwest region of the state of Goiás. This is an observational, analytical, cross-sectional study, with a subsequent cohort of susceptible subjects for vaccination against HBV, assessment of adherence and vaccine response. In the period from May to July of 2011, 467 subjects were selected from seven settlements in the southwest of Goiás. All subjects were interviewed and tested for the detection of the serological markers HBsAg, anti-HBc and anti-HBs, by means of the enzyme-linked immunosorbent assay (ELISA). Reactive HBsAg samples were tested for total anti-HDV and IgM, by means of the ELISA, submitted to the detection of the HBV DNA by semi-nested PCR and genotyped by sequencing. Chemiluminescent microparticle immunoassay was used for the quantitative determination of anti-HBs. The research proposal was approved by the Research Ethics Committee of the Federal University of Goiás. Of the total sample, 52.2% were men, 57.8% were married and 49% had less than five years of education. Most subjects were from cities in the midwest region (81.6%) and were older than 19 years of age (73.7%). Overall prevalence for infection by the HBV was 10.9% (51/467), being 0.8% (4/467) for HBsAg, 7.9% (37/467) for anti-HBc and anti- HBs, and 2.1% (10/467) for anti-HBc. Moreover, 19.3% of the people living in settlements presented isolated positivity for the anti-HBs marker, which indicates they were previously vaccinated against hepatitis B. The four reactive HBV DNA samples were classified as subgenotype A1 (3/4) and D3 (1/4). The male gender (adjusted OR: 2.65; p= 0.007), age (adjusted OR: 1.07; p= 0.000), history of transfusion (adjusted OR: 2.52; p= 0.025) and greater period of time living in the settlements (adjusted OR: 1.10; p= 0.026) were variables associated with the HBV. A total of 181 subjects susceptible to the infection started vaccine against hepatitis B, but only 106 (58.6%; 106/181) completed the vaccine scheme. Of these, it was possible to assess the vaccine response in 77 subjects, and 68.8% (53/77) presented protective titers of anti-HBs. Of those subjects living in the settlements who did not respond to the vaccine, a greater proportion was male, had more than 40 years and was smokers (p< 0.001). No subject presented positivity for the anti-HDV marker. The results of this study evidence the need for effective strategies to prevent hepatitis B in the studied settlements, emphasizing vaccine against hepatitis. In light of the low vaccine response against this infection in older subjects, more immunogenic schemes are suggested, so as to induce a protective vaccine response. |
publishDate |
2014 |
dc.date.accessioned.fl_str_mv |
2014-11-06T11:36:06Z |
dc.date.issued.fl_str_mv |
2014-07-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
CAETANO, Karlla Antonieta Amorim. Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes. 2014. 124 f. Tese (Doutorado em Ciências da Saúde) - Universidade Federal de Goiás, Goiânia,2014. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/3551 |
identifier_str_mv |
CAETANO, Karlla Antonieta Amorim. Epidemiologia da infecção pelo vírus da hepatite b em assentados em Goiás: subsídios para ações de prevenção e controle em populações emergentes. 2014. 124 f. Tese (Doutorado em Ciências da Saúde) - Universidade Federal de Goiás, Goiânia,2014. |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/3551 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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-1006864312617745310 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 |
dc.relation.department.fl_str_mv |
1545772475950486338 |
dc.relation.cnpq.fl_str_mv |
8765449414823306929 |
dc.relation.sponsorship.fl_str_mv |
-2555911436985713659 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Ciências da Saúde (FM) |
dc.publisher.initials.fl_str_mv |
UFG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Faculdade de Medicina - FM (RG) |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFG instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
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UFG |
institution |
UFG |
reponame_str |
Repositório Institucional da UFG |
collection |
Repositório Institucional da UFG |
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