Comparative Pertussis Antibody Response of Nigerian Children to Diphtheria, Pertussis, Tetanus (DPT) and Pentavalent Vaccines
Comparative Pertussis Antibody Response of Nigerian Children to Diphtheria, Pertussis, Tetanus (DPT) and Pentavalent Vaccines
摘要
<strong>Background:</strong> In Nigeria Pentavalent vaccine had replaced Diphtheria-Pertussis- Tetanus [DPT] vaccine in the prevention of pertussis since 2012. <strong>Aims and Objectives:</strong> The aim of this study was to compare the anti-pertussis immunoglobin G (IgG) response of children who received DPT with those who received the pentavalent vaccine. <strong>Subjects and Methods:</strong> This study was carried out in Akpabuyo LGA of Cross River State from April to June 2016. It was a cross-sectional survey of anti-pertussis IgG levels in children aged 6 months to 5 years who received DPT and those who received pentavalent vaccine. IgG antibody levels were determined using enzyme-linked immunosorbent assay. The protective level was set at >11 DU according to manufacturer’s cut off point. <strong>Results:</strong> Seventy eight out of 230 children [33.9%] who had received DPT had protective levels of anti-pertussis IgG compared to 74 out of 192 children [38.5%] who had received pentavalent vaccine. The difference was not statistically significant [<em>p</em> = 0.61]. The median IgG antibody level in those who received DPT was 8.0 DU (interquartile range (IQR) 4.0 - 13.0) compared with 9.0 DU (IQR) 4.0 - 15.0 in those who received pentavalent vaccine [<em>p</em> = 0.18]. No single factor investigated predicted the development of protective levels of antibody in the multivariate analysis. <strong>Conclusion/Recommendation:</strong> There was no difference in the antipertussis antibody response between DPT and pentavalent vaccines recipients. Further study is needed to elucidate factors that could be responsible for low anti-pertussis antibody response in this population.
<strong>Background:</strong> In Nigeria Pentavalent vaccine had replaced Diphtheria-Pertussis- Tetanus [DPT] vaccine in the prevention of pertussis since 2012. <strong>Aims and Objectives:</strong> The aim of this study was to compare the anti-pertussis immunoglobin G (IgG) response of children who received DPT with those who received the pentavalent vaccine. <strong>Subjects and Methods:</strong> This study was carried out in Akpabuyo LGA of Cross River State from April to June 2016. It was a cross-sectional survey of anti-pertussis IgG levels in children aged 6 months to 5 years who received DPT and those who received pentavalent vaccine. IgG antibody levels were determined using enzyme-linked immunosorbent assay. The protective level was set at >11 DU according to manufacturer’s cut off point. <strong>Results:</strong> Seventy eight out of 230 children [33.9%] who had received DPT had protective levels of anti-pertussis IgG compared to 74 out of 192 children [38.5%] who had received pentavalent vaccine. The difference was not statistically significant [<em>p</em> = 0.61]. The median IgG antibody level in those who received DPT was 8.0 DU (interquartile range (IQR) 4.0 - 13.0) compared with 9.0 DU (IQR) 4.0 - 15.0 in those who received pentavalent vaccine [<em>p</em> = 0.18]. No single factor investigated predicted the development of protective levels of antibody in the multivariate analysis. <strong>Conclusion/Recommendation:</strong> There was no difference in the antipertussis antibody response between DPT and pentavalent vaccines recipients. Further study is needed to elucidate factors that could be responsible for low anti-pertussis antibody response in this population.
作者
Emmanuel Eyo Ekanem
Glory Ekpo Bassey
Henry Chima Okpara
Eyong Komomo Ibor
Emmanuel Eyo Ekanem;Glory Ekpo Bassey;Henry Chima Okpara;Eyong Komomo Ibor(Dept. of Paediatrics, University of Calabar and University of Calabar Teaching Hospital, Calabar, Nigeria;Dept. of Chemical Pathology, University of Calabar and University of Calabar Teaching Hospital, Calabar, Nigeria)
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