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- W3009285400 abstract "Pertussis is a highly contagious disease caused by Bordetella pertussis. It poses a high morbidity and mortality rate, especially among infants younger than 6 months old. In Argentina, pertussis incidence and mortality have increased over the past three decades.To establish Bordetella pertussisantibody titers among pregnant women in their third trimester and among newborn infants, as measured in cord blood.This was an observational, cross-sectional study. The study started in 2011; at that time, pertussis vaccination was not mandatory for pregnant women as per the national immunization schedule, only optional. Maternal antibodies were measured in the last trimester of pregnancy for women and in cord blood for newborn infants. Antibody titers were determined using Abcam's anti-Bordetella pertussis toxin (PT) IgG in vitro ELISA kit. The χ² test was used to compare prevalence rates.The study included 111 mother-newborn infant dyads; 35 infants from unvaccinated mothers (before the introduction of the vaccine) and 76 from vaccinated mothers. Positive IgG antibodies were found in 92% (70/76) of infants born from vaccinated mothers whereas 100% (35/35) of infants born from unvaccinated mothers had negative results for antibodies; p < 0.001.In the vaccinated population of this study, 92% of infants had positive IgG antibodies. This study supports the need for maternal immunization against Bordetella pertussis to provide protection to newborn infants.La tos convulsa es una enfermedad altamente contagiosa causada por Bordetella pertussis. Tiene una alta tasa de morbilidad y mortalidad, especialmente, en los lactantes menores de seis meses de edad. En la Argentina, la incidencia y la mortalidad se han encontrado en aumento en las últimas 3 décadas.Determinar anticuerpos contra Bordetella pertussis en las mujeres embarazadas en el tercer trimestre de la gestación y en el recién nacido, medidos en la sangre del cordón.Se diseñó un estudio observacional, transversal. El estudio se inició en 2011 cuando la vacunación contra pertussis en la embarazada no estaba incluida en el Calendario Nacional de Vacunación y era opcional. Los anticuerpos se midieron en las madres en el tercer trimestre del embarazo y en la sangre del cordón umbilical al nacer. Las determinaciones de anticuerpos se realizaron con el kit de ELISA humano para IgG toxina pertussis ABCAM®. Se utilizó la prueba de chi2 para comparar la prevalencia.Se incluyó a 111 madres y a sus bebés, 35 hijos de madres no vacunadas (antes de la implementación de la vacuna en embarazadas) y 76 hijos de madres vacunadas. Los bebés de madres vacunadas presentaron anticuerpos IgG positivos en el 92% (70/76), mientras que los bebés de madres no vacunadas fueron negativos para anticuerpos IgG en el 100% (35/35) con una p < 0,001.En la población de vacunadas del estudio, se observó que sus hijos presentaron anticuerpos IgG positivos en el 92%. Este estudio apoya la necesidad de la inmunización materna contra Bordetella pertussis para proteger al recién nacido." @default.
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- W3009285400 date "2017-08-01" @default.
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- W3009285400 title "Seroprevalence of Bordetella pertussis among vaccinated and unvaccinated pregnant women and newborn infants in a university hospital of Buenos Aires" @default.
- W3009285400 doi "https://doi.org/10.5546/aap.2017.eng.311" @default.
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