Reacciones adversas a vacuna DPT del Programa Nacional de Inmunizaciones

Background: During 2005, the surveillance system of the Chilean Immunization Program detected an increased number of adverse reaction notifications associated to diphtheria, pertussis and tetanus whole-cell vaccine (DPT), coincidentiy with a change in the vaccine manufacturer. Aim: To compare the re...

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Autores principales: Abarca V,Katia, Cerda L,Jaime, Ferreccio R,Catterina
Lenguaje:Spanish / Castilian
Publicado: Sociedad Médica de Santiago 2009
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009000100002
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spelling oai:scielo:S0034-988720090001000022009-04-13Reacciones adversas a vacuna DPT del Programa Nacional de InmunizacionesAbarca V,KatiaCerda L,JaimeFerreccio R,Catterina Adverse drug reaction reporting system Bacterial vaccines Diphtheria-tetanus-pertussis vaccine Background: During 2005, the surveillance system of the Chilean Immunization Program detected an increased number of adverse reaction notifications associated to diphtheria, pertussis and tetanus whole-cell vaccine (DPT), coincidentiy with a change in the vaccine manufacturer. Aim: To compare the reactogenicity of two DPT formulations (vaccines 1 and 2) in 18-month-old infants and 4-year-old children. Material and methods: Severe adverse reactions to DPT were studied at the emergency room of two hospitals of Santiago in a case-control study (110 cases and 171 controls, who consulted for other causes). Simultaneously the incidence of total adverse reactions (mild and severe) for vaccine 1 and 2 was estimated in a cohort of 1,017 children vaccinated in an ambulatory health center of the same área. The formulation of DPT received by all participants was verífied, as well as the temporal relation with consultation or symptoms referred by their caregivers. Results: There was a greater probability of consulting at the emergency rooms for severe adverse reactions among children who received vaccine 1 (odds ratio (OR) =7.1; p <0.001), being greater among 4-year-old children (OR =18.9; p <0.001). Coincidentiy, in the cohort of vaccinated children, those who received vaccine 1 had a higher risk of presenting adverse reactions (RR =2.9; p <0.001), being high fever the commonest. Conclusions: We confirmed that vaccine 1 was associated to a higher risk of adverse reactions, especially among 4-year-old children. These results allowed the sanitary authority to adopt an informed decisión. The usefulness of observational studies in vaccine adverse reactions is confirmed.info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.137 n.1 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009000100002es10.4067/S0034-98872009000100002
institution Scielo Chile
collection Scielo Chile
language Spanish / Castilian
topic Adverse drug reaction reporting system
Bacterial vaccines
Diphtheria-tetanus-pertussis vaccine
spellingShingle Adverse drug reaction reporting system
Bacterial vaccines
Diphtheria-tetanus-pertussis vaccine
Abarca V,Katia
Cerda L,Jaime
Ferreccio R,Catterina
Reacciones adversas a vacuna DPT del Programa Nacional de Inmunizaciones
description Background: During 2005, the surveillance system of the Chilean Immunization Program detected an increased number of adverse reaction notifications associated to diphtheria, pertussis and tetanus whole-cell vaccine (DPT), coincidentiy with a change in the vaccine manufacturer. Aim: To compare the reactogenicity of two DPT formulations (vaccines 1 and 2) in 18-month-old infants and 4-year-old children. Material and methods: Severe adverse reactions to DPT were studied at the emergency room of two hospitals of Santiago in a case-control study (110 cases and 171 controls, who consulted for other causes). Simultaneously the incidence of total adverse reactions (mild and severe) for vaccine 1 and 2 was estimated in a cohort of 1,017 children vaccinated in an ambulatory health center of the same área. The formulation of DPT received by all participants was verífied, as well as the temporal relation with consultation or symptoms referred by their caregivers. Results: There was a greater probability of consulting at the emergency rooms for severe adverse reactions among children who received vaccine 1 (odds ratio (OR) =7.1; p <0.001), being greater among 4-year-old children (OR =18.9; p <0.001). Coincidentiy, in the cohort of vaccinated children, those who received vaccine 1 had a higher risk of presenting adverse reactions (RR =2.9; p <0.001), being high fever the commonest. Conclusions: We confirmed that vaccine 1 was associated to a higher risk of adverse reactions, especially among 4-year-old children. These results allowed the sanitary authority to adopt an informed decisión. The usefulness of observational studies in vaccine adverse reactions is confirmed.
author Abarca V,Katia
Cerda L,Jaime
Ferreccio R,Catterina
author_facet Abarca V,Katia
Cerda L,Jaime
Ferreccio R,Catterina
author_sort Abarca V,Katia
title Reacciones adversas a vacuna DPT del Programa Nacional de Inmunizaciones
title_short Reacciones adversas a vacuna DPT del Programa Nacional de Inmunizaciones
title_full Reacciones adversas a vacuna DPT del Programa Nacional de Inmunizaciones
title_fullStr Reacciones adversas a vacuna DPT del Programa Nacional de Inmunizaciones
title_full_unstemmed Reacciones adversas a vacuna DPT del Programa Nacional de Inmunizaciones
title_sort reacciones adversas a vacuna dpt del programa nacional de inmunizaciones
publisher Sociedad Médica de Santiago
publishDate 2009
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009000100002
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AT cerdaljaime reaccionesadversasavacunadptdelprogramanacionaldeinmunizaciones
AT ferrecciorcatterina reaccionesadversasavacunadptdelprogramanacionaldeinmunizaciones
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