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All Journal Paediatrica Indonesiana Proceedings Book of International Conference and Exhibition on The Indonesian Medical Education and Research Institute
Ari Prayitno, Ari
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Health Professions Medicine & Pharmacology Neuroscience Public Health

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Evaluation of anti-diphtheria toxoid antibody persistence in school-age children in Jakarta, Indonesia Santi, Theresia; Prayitno, Ari; Munasir, Zakiudin; Hadinegoro, Sri Rezeki S.; Harahap, Alida Roswita; Werdhani, Retno Asti; Sah Bandar, Ivo Novita; Jo, Juandy; Hegar, Badriul
Paediatrica Indonesiana Vol 64 No 5 (2024): September 2024
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi64.5.2024.447-53

Abstract

Background Diphtheria can be effectively prevented by adequate immunization. A combined vaccine against diphtheria toxoid, pertussis, and tetanus toxoid (DPT) is currently used in routine pediatric immunizations. Outbreaks of diphtheria could emerge in Indonesia as a consequence of declining routine vaccination during the COVID-19 pandemic. Objective To analyze the impact of the first (administered at 18-24 months of age ) and second diphtheria boosters (administered at 5-7 years of age ) in retaining protective levels of anti-diphtheria toxoid antibodies. We also investigated for relevant factors associated with anti-diphtheria toxoid antibody titers. Methods This cross-sectional study was conducted in the Senen District of Jakarta, Indonesia. The inclusion criteria were healthy children aged 6 to 7 years with documented history of DPT vaccination. Primary vaccination defined as 3 doses of DPT at age less than 1 year , first booster was DPT vaccination at 18-24 years of age, and second booster was diphtheria-tetanus (DT) vaccination received at 5 to 7 years of age. Peripheral blood specimens were obtained from participating children, after informed consent was provided by their parents. Antibodies against diphtheria in sera specimens were assessed by commercial anti-diphtheria toxoid immunoglobulin G (IgG) enzyme-linked immunosorbent assay. Results There were 154 children included in the study, with a female majority (61%). Overall, specific humoral immunity against diphtheria was observed in 113 children (73.4%). There was no statistical difference in immunity level between genders. Importantly, children who received the first and second diphtheria booster had significantly higher anti-diphtheria antibody level than those who did not receive both diphtheria booster (P<0.001). Conclusion Booster vaccinations are crucial among school-age children in Indonesia to improve their anti-diphtheria immunity and to minimize a risk of diphtheria outbreaks.
Profile of Anti-Diphtheria Toxoid Immunoglobulin G among Pre-School Children in the Senen District, Jakarta, Indonesia Santi, Theresia; Jo, Juandy; Prayitno, Ari; Munasir, Zakiudin; Hegar, Badriul
Proceedings Book of International Conference and Exhibition on The Indonesian Medical Education Research Institute Vol. 7 No. - (2023): Proceedings Book of International Conference and Exhibition on The Indonesian M
Publisher : Writing Center IMERI FMUI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69951/proceedingsbookoficeonimeri.v7i-.189

Abstract

Background: Diphtheria is a re-emerging disease in Indonesia that can be prevented by vaccination. This study evaluates the anti-diphtheria toxoid immunoglobulin G levels among healthy children aged 6 – 7 years old who had not received the second booster immunization for Diphtheria, Tetanus, and Pertussis (DTP) commonly administered at 5 – 7 years old. Methods: This cross-sectional study was conducted in the Senen district of Jakarta, Indonesia. All subjects had been vaccinated with three doses of immunization for DTP during the first year of life, and subsequently classified into a group of children who received the first booster immunization of DTP at 18 – 24 months old and who had not received it yet. Antibody against Diphtheria toxoids within the sera samples was assessed by commercial Anti-Diphtheria toxoid IgG Enzyme-Linked Immunosorbent Assay and classified in four groups: no protection (< 0.01 IU/ml), uncertain (0.01 – 0.09 IU/ml), full protection (0.10 – 1 IU/ml) and long-term protection (>1 IU/ml). Results: Eighty-nine children were included in this study; only 71 subjects (79.7%) had received the first DTP booster at 18–24 months old. The specific humoral immunity against diphtheria was observed among 57 children (64%). Notably, among the 89 subjects, only two subjects not receiving the first DTP booster still had antibody protection for diphtheria (p=0.001, OR 27.5, 95% CI: 5.71 – 132.42). Conclusion: The first diphtheria booster vaccination at 18 – 24 months old is crucial to protect pre-school children against diphtheria.
Co-Authors Badriul Hegar Harahap, Alida Roswita Ivo Novita Sah Bandar Juandy Jo Retno Asti Werdhani Sri Rezeki S. Hadinegoro, Sri Rezeki S. Theresia Santi, Theresia Zakiudin Munasir