Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Cadernos de Saúde Pública |
Texto Completo: | https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941 |
Resumo: | A seroepidemiological study was carried out from 1992 to 1993 to estimate the prevalence of antibody to prevailing influenza virus strains circulating among patients attending the IEC Virology Laboratory in Belem, Northern Brazil. A total of 179 (11%) of serum samples were obtained during the post-epidemic period and processed by the hemagglutination inhibition test against the A/Taiwan/1/86 (H1N1), A/Beijing/353/89 (H3N2), and B/Yamagata/16/88 types of influenza virus. The serological results indicate circulation of viruses antigenically related to all three strains during the two-year study period. In 1992, the overall prevalence rates of HI antibodies to H1N1 and H3N2 were 84% and 56%, respectively. Presence of antibodies to both strains was detected in all age groups, suggesting intense viral activity that year. Antibodies to influenza B were detected at lower levels in all patients during this period. Similar prevalence to the H1N1 virus was noted in 1993, indicating that this strain occurred in both years. However, an increase in prevalence rates for the H3N2 virus was seen in 1993, suggesting that this strain (or a related virus) circulated intensively during this year. Influenza B activity also increased in 1993, causing infection mainly among young adults. |
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Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993EpidemiologiaSoroprevalênciaVírus InfluenzaA seroepidemiological study was carried out from 1992 to 1993 to estimate the prevalence of antibody to prevailing influenza virus strains circulating among patients attending the IEC Virology Laboratory in Belem, Northern Brazil. A total of 179 (11%) of serum samples were obtained during the post-epidemic period and processed by the hemagglutination inhibition test against the A/Taiwan/1/86 (H1N1), A/Beijing/353/89 (H3N2), and B/Yamagata/16/88 types of influenza virus. The serological results indicate circulation of viruses antigenically related to all three strains during the two-year study period. In 1992, the overall prevalence rates of HI antibodies to H1N1 and H3N2 were 84% and 56%, respectively. Presence of antibodies to both strains was detected in all age groups, suggesting intense viral activity that year. Antibodies to influenza B were detected at lower levels in all patients during this period. Similar prevalence to the H1N1 virus was noted in 1993, indicating that this strain occurred in both years. However, an increase in prevalence rates for the H3N2 virus was seen in 1993, suggesting that this strain (or a related virus) circulated intensively during this year. Influenza B activity also increased in 1993, causing infection mainly among young adults.Um estudo soroepidemiológico foi realizado para determinar a prevalência de anticorpos IH para os sorotipos de influenza circulantes entre pacientes atendidos no Laboratório de Virologia do IEC, em Belém, PA, Brasil, em 1992 e 1993. Um total de 179 (11%) amostras de sangue foi coletado durante período pós-epidêmico e processado pelo teste da Inibição da Hemaglutinação para os vírus da influenza A/Taiwan/1/86 (H1N1), A/Beijing/353/89 (H3N2) e B/Yamagata/16/88. Os resultados indicaram a circulação de vírus antigenicamente relacionados aos três sorotipos pesquisados. Em 1992, altas taxas de soropositividade foram observadas para as cepas H1N1 (84%) e H3N2 (56%), bem como anticorpos IH foram detectados em todas as faixas de idade, sugerindo intensa circulação desses vírus. No mesmo ano, a atividade da influenza B revelou-se em níveis moderados. A prevalência de anticorpos IH para os vírus H1N1, em 1993, foi similar à observada em 1992, indicando a circulação desses vírus em ambos os anos. Um aumento na prevalência dos vírus H3N2, em 1993, sugere que a cepa A/Beijing/353/89 (ou uma antigenicamente relacionada) também circulou intensamente naquele ano. Do mesmo modo, a atividade dos vírus da influenza B aumentou em 1993, como apontam as infecções em todas as idades, particularmente entre os adultos jovens.Reports in Public HealthCadernos de Saúde Pública1997-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlapplication/pdfhttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941Reports in Public Health; Vol. 13 No. 1 (1997): January/MarchCadernos de Saúde Pública; v. 13 n. 1 (1997): Janeiro/Março1678-44640102-311Xreponame:Cadernos de Saúde Públicainstname:Fundação Oswaldo Cruz (FIOCRUZ)instacron:FIOCRUZporhttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941/1872https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941/1873Santos, Domingos Ezenildo Matos dosCardias, Cláudia Alessandra da SilvaMello, Wyller Alencar deinfo:eu-repo/semantics/openAccess2024-03-06T15:26:09Zoai:ojs.teste-cadernos.ensp.fiocruz.br:article/941Revistahttps://cadernos.ensp.fiocruz.br/ojs/index.php/csphttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/oaicadernos@ensp.fiocruz.br||cadernos@ensp.fiocruz.br1678-44640102-311Xopendoar:2024-03-06T13:01:09.379827Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ)true |
dc.title.none.fl_str_mv |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 |
title |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 |
spellingShingle |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 Santos, Domingos Ezenildo Matos dos Epidemiologia Soroprevalência Vírus Influenza |
title_short |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 |
title_full |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 |
title_fullStr |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 |
title_full_unstemmed |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 |
title_sort |
Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993 |
author |
Santos, Domingos Ezenildo Matos dos |
author_facet |
Santos, Domingos Ezenildo Matos dos Cardias, Cláudia Alessandra da Silva Mello, Wyller Alencar de |
author_role |
author |
author2 |
Cardias, Cláudia Alessandra da Silva Mello, Wyller Alencar de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Santos, Domingos Ezenildo Matos dos Cardias, Cláudia Alessandra da Silva Mello, Wyller Alencar de |
dc.subject.por.fl_str_mv |
Epidemiologia Soroprevalência Vírus Influenza |
topic |
Epidemiologia Soroprevalência Vírus Influenza |
description |
A seroepidemiological study was carried out from 1992 to 1993 to estimate the prevalence of antibody to prevailing influenza virus strains circulating among patients attending the IEC Virology Laboratory in Belem, Northern Brazil. A total of 179 (11%) of serum samples were obtained during the post-epidemic period and processed by the hemagglutination inhibition test against the A/Taiwan/1/86 (H1N1), A/Beijing/353/89 (H3N2), and B/Yamagata/16/88 types of influenza virus. The serological results indicate circulation of viruses antigenically related to all three strains during the two-year study period. In 1992, the overall prevalence rates of HI antibodies to H1N1 and H3N2 were 84% and 56%, respectively. Presence of antibodies to both strains was detected in all age groups, suggesting intense viral activity that year. Antibodies to influenza B were detected at lower levels in all patients during this period. Similar prevalence to the H1N1 virus was noted in 1993, indicating that this strain occurred in both years. However, an increase in prevalence rates for the H3N2 virus was seen in 1993, suggesting that this strain (or a related virus) circulated intensively during this year. Influenza B activity also increased in 1993, causing infection mainly among young adults. |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-01-01 |
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://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941 |
url |
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941/1872 https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941/1873 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html application/pdf |
dc.publisher.none.fl_str_mv |
Reports in Public Health Cadernos de Saúde Pública |
publisher.none.fl_str_mv |
Reports in Public Health Cadernos de Saúde Pública |
dc.source.none.fl_str_mv |
Reports in Public Health; Vol. 13 No. 1 (1997): January/March Cadernos de Saúde Pública; v. 13 n. 1 (1997): Janeiro/Março 1678-4464 0102-311X reponame:Cadernos de Saúde Pública instname:Fundação Oswaldo Cruz (FIOCRUZ) instacron:FIOCRUZ |
instname_str |
Fundação Oswaldo Cruz (FIOCRUZ) |
instacron_str |
FIOCRUZ |
institution |
FIOCRUZ |
reponame_str |
Cadernos de Saúde Pública |
collection |
Cadernos de Saúde Pública |
repository.name.fl_str_mv |
Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ) |
repository.mail.fl_str_mv |
cadernos@ensp.fiocruz.br||cadernos@ensp.fiocruz.br |
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1798943344804495360 |