Inquérito soroepidemiológico para os vírus influenza em Belém, Pará, Brasil, 1992-1993

Detalhes bibliográficos
Autor(a) principal: Santos, Domingos Ezenildo Matos dos
Data de Publicação: 1997
Outros Autores: Cardias, Cláudia Alessandra da Silva, Mello, Wyller Alencar de
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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spelling 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
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url https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941
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dc.relation.none.fl_str_mv https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/941/1872
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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
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reponame_str Cadernos de Saúde Pública
collection Cadernos de Saúde Pública
repository.name.fl_str_mv Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ)
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