Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | spa |
Título da fonte: | Repositório Digital do Instituto Evandro Chagas (Patuá) |
Texto Completo: | http://patua.iec.gov.br//handle/iec/3224 |
Resumo: | A tetravalent rhesus-human reassortant rotavirus (RRV-TV) vaccine (4 x 10(4) plaque-forming units/dose) was evaluated for safety, immunogenicity and efficacy in a prospective, randomized, double-blind, placebo-controlled trial involving 540 Brazilian infants. Doses of vaccine or placebo were given at ages, 1, 3 and 5 months. No significant differences were noted in the occurrence of diarrhoea or vomiting in vaccine and placebo recipients following each dose. Low-grade fever occurred on days 35 in 23% of vaccinees after the first dose, but not after the second or third doses of vaccine. An IgA antibody response to rhesus rotavirus (RRV) occurred in 58% of vaccinees and 33% of placebo recipients. Neutralizing antibody responses to individual serotypes did not exceed 20% when measured by fluorescent focus reduction, but exceeded 40% when assayed by plaque reduction neutralization. There were 91 cases of rotavirus diarrhoea among the 3-dose (vaccine or placebo) recipients during two years of follow-up, 36 of them among children given the vaccine. Overall vaccine efficacy was 8% (P = 0.005) against any diarrhoea and 35% (P = 0.03) against any rotavirus diarrhoea. Protection during the first year of follow-up, when G serotype 1 rotavirus predominated, was 57% (P = 0.008), but fell to 12% in the second year. Similar results were obtained when analysis was restricted to episodes in which rotavirus was the only identified pathogen. There was a tendency for enhanced protection by vaccine against illness associated with an average of 6 or more stools per day. These results are sufficiently encouraging to warrant further studies of this vaccine in developing countries using a higher dosage in an attempt to improve its immunogenicity and efficacy. |
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Linhares, Alexandre da CostaGabbay, Yvone BenchimolMascarenhas, Joana D'Arc PereiraFreitas, Ronaldo Barros deOliveira, Consuelo Silva deBellesi, NewtonMonteiro, Talita Antônia FurtadoLins-Lainson, Zéa ConstanteRamos, Francisco Lúzio de PaulaValente, Sebastião Aldo da Silva2018-07-13T13:02:45Z2018-07-13T13:02:45Z1998LINHARES, Alexandre da Costa et al. Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil Pan American Journal of Public Health, v. 3, n. 5, p. 326-336, 1998.1020-4989http://patua.iec.gov.br//handle/iec/3224A tetravalent rhesus-human reassortant rotavirus (RRV-TV) vaccine (4 x 10(4) plaque-forming units/dose) was evaluated for safety, immunogenicity and efficacy in a prospective, randomized, double-blind, placebo-controlled trial involving 540 Brazilian infants. Doses of vaccine or placebo were given at ages, 1, 3 and 5 months. No significant differences were noted in the occurrence of diarrhoea or vomiting in vaccine and placebo recipients following each dose. Low-grade fever occurred on days 35 in 23% of vaccinees after the first dose, but not after the second or third doses of vaccine. An IgA antibody response to rhesus rotavirus (RRV) occurred in 58% of vaccinees and 33% of placebo recipients. Neutralizing antibody responses to individual serotypes did not exceed 20% when measured by fluorescent focus reduction, but exceeded 40% when assayed by plaque reduction neutralization. There were 91 cases of rotavirus diarrhoea among the 3-dose (vaccine or placebo) recipients during two years of follow-up, 36 of them among children given the vaccine. Overall vaccine efficacy was 8% (P = 0.005) against any diarrhoea and 35% (P = 0.03) against any rotavirus diarrhoea. Protection during the first year of follow-up, when G serotype 1 rotavirus predominated, was 57% (P = 0.008), but fell to 12% in the second year. Similar results were obtained when analysis was restricted to episodes in which rotavirus was the only identified pathogen. There was a tendency for enhanced protection by vaccine against illness associated with an average of 6 or more stools per day. These results are sufficiently encouraging to warrant further studies of this vaccine in developing countries using a higher dosage in an attempt to improve its immunogenicity and efficacy.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Clínica de Medicina Preventiva de Pará. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.World Health OrganizationImmunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleRotavirus / patogenicidadeRotavirus / imunologiaVacinas contra Rotavirus / administração & dosagemVacinas contra Rotavirus / imunologiaVacinas / imunologiaVacina contra Difteria, Tétano e Coqueluche / imunologiainfo:eu-repo/semantics/openAccessspareponame:Repositório Digital do Instituto Evandro Chagas (Patuá)instname:Instituto Evandro Chagas (IEC)instacron:IECORIGINALImmunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil.pdfImmunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil.pdfapplication/pdf335563https://patua.iec.gov.br/bitstreams/d5a6ed47-a907-44c6-86c6-50769d594e20/downloadcb466a89cc932dfe41424273ddfb5242MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-871https://patua.iec.gov.br/bitstreams/619332ef-c927-4eb8-bf82-2abcaf87f1fe/download52f1732ea66fbd1123abe39f5373b797MD52TEXTImmunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil.pdf.txtImmunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil.pdf.txtExtracted texttext/plain54317https://patua.iec.gov.br/bitstreams/75955634-f065-4eda-9450-dc59c63d9b74/download54136e8b56335f7575667d7e99a6d5f7MD55THUMBNAILImmunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil.pdf.jpgImmunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil.pdf.jpgGenerated Thumbnailimage/jpeg5383https://patua.iec.gov.br/bitstreams/ac6b461d-a689-4a13-9c32-c702be4086a6/downloadc420a6f1aa6d1c64bba77cdac12eb3d1MD56iec/32242022-10-20 21:21:21.4oai:patua.iec.gov.br:iec/3224https://patua.iec.gov.brRepositório InstitucionalPUBhttps://patua.iec.gov.br/oai/requestclariceneta@iec.gov.br || Biblioteca@iec.gov.bropendoar:2022-10-20T21:21:21Repositório Digital do Instituto Evandro Chagas (Patuá) - Instituto Evandro Chagas (IEC)falseVG9kb3Mgb3MgZG9jdW1lbnRvcyBkZXNzYSBjb2xlw6fDo28gc2VndWVtIGEgTGljZW7Dp2EgQ3JlYXRpdmUgY29tbW9ucy4= |
dc.title.pt_BR.fl_str_mv |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil |
title |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil |
spellingShingle |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil Linhares, Alexandre da Costa Rotavirus / patogenicidade Rotavirus / imunologia Vacinas contra Rotavirus / administração & dosagem Vacinas contra Rotavirus / imunologia Vacinas / imunologia Vacina contra Difteria, Tétano e Coqueluche / imunologia |
title_short |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil |
title_full |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil |
title_fullStr |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil |
title_full_unstemmed |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil |
title_sort |
Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil |
author |
Linhares, Alexandre da Costa |
author_facet |
Linhares, Alexandre da Costa Gabbay, Yvone Benchimol Mascarenhas, Joana D'Arc Pereira Freitas, Ronaldo Barros de Oliveira, Consuelo Silva de Bellesi, Newton Monteiro, Talita Antônia Furtado Lins-Lainson, Zéa Constante Ramos, Francisco Lúzio de Paula Valente, Sebastião Aldo da Silva |
author_role |
author |
author2 |
Gabbay, Yvone Benchimol Mascarenhas, Joana D'Arc Pereira Freitas, Ronaldo Barros de Oliveira, Consuelo Silva de Bellesi, Newton Monteiro, Talita Antônia Furtado Lins-Lainson, Zéa Constante Ramos, Francisco Lúzio de Paula Valente, Sebastião Aldo da Silva |
author2_role |
author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Linhares, Alexandre da Costa Gabbay, Yvone Benchimol Mascarenhas, Joana D'Arc Pereira Freitas, Ronaldo Barros de Oliveira, Consuelo Silva de Bellesi, Newton Monteiro, Talita Antônia Furtado Lins-Lainson, Zéa Constante Ramos, Francisco Lúzio de Paula Valente, Sebastião Aldo da Silva |
dc.subject.decsPrimary.pt_BR.fl_str_mv |
Rotavirus / patogenicidade Rotavirus / imunologia Vacinas contra Rotavirus / administração & dosagem Vacinas contra Rotavirus / imunologia Vacinas / imunologia Vacina contra Difteria, Tétano e Coqueluche / imunologia |
topic |
Rotavirus / patogenicidade Rotavirus / imunologia Vacinas contra Rotavirus / administração & dosagem Vacinas contra Rotavirus / imunologia Vacinas / imunologia Vacina contra Difteria, Tétano e Coqueluche / imunologia |
description |
A tetravalent rhesus-human reassortant rotavirus (RRV-TV) vaccine (4 x 10(4) plaque-forming units/dose) was evaluated for safety, immunogenicity and efficacy in a prospective, randomized, double-blind, placebo-controlled trial involving 540 Brazilian infants. Doses of vaccine or placebo were given at ages, 1, 3 and 5 months. No significant differences were noted in the occurrence of diarrhoea or vomiting in vaccine and placebo recipients following each dose. Low-grade fever occurred on days 35 in 23% of vaccinees after the first dose, but not after the second or third doses of vaccine. An IgA antibody response to rhesus rotavirus (RRV) occurred in 58% of vaccinees and 33% of placebo recipients. Neutralizing antibody responses to individual serotypes did not exceed 20% when measured by fluorescent focus reduction, but exceeded 40% when assayed by plaque reduction neutralization. There were 91 cases of rotavirus diarrhoea among the 3-dose (vaccine or placebo) recipients during two years of follow-up, 36 of them among children given the vaccine. Overall vaccine efficacy was 8% (P = 0.005) against any diarrhoea and 35% (P = 0.03) against any rotavirus diarrhoea. Protection during the first year of follow-up, when G serotype 1 rotavirus predominated, was 57% (P = 0.008), but fell to 12% in the second year. Similar results were obtained when analysis was restricted to episodes in which rotavirus was the only identified pathogen. There was a tendency for enhanced protection by vaccine against illness associated with an average of 6 or more stools per day. These results are sufficiently encouraging to warrant further studies of this vaccine in developing countries using a higher dosage in an attempt to improve its immunogenicity and efficacy. |
publishDate |
1998 |
dc.date.issued.fl_str_mv |
1998 |
dc.date.accessioned.fl_str_mv |
2018-07-13T13:02:45Z |
dc.date.available.fl_str_mv |
2018-07-13T13:02:45Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
LINHARES, Alexandre da Costa et al. Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil Pan American Journal of Public Health, v. 3, n. 5, p. 326-336, 1998. |
dc.identifier.uri.fl_str_mv |
http://patua.iec.gov.br//handle/iec/3224 |
dc.identifier.issn.-.fl_str_mv |
1020-4989 |
identifier_str_mv |
LINHARES, Alexandre da Costa et al. Immunogenicidad, inocuidad y eficacia de una vacuna tetravalente obtenida por recombinación genética de rotavirus aislados de monos rhesus y seres humanos en Belém, Brasil Pan American Journal of Public Health, v. 3, n. 5, p. 326-336, 1998. 1020-4989 |
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spa |
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info:eu-repo/semantics/openAccess |
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World Health Organization |
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World Health Organization |
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