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All Journal Majalah Kedokteran Bandung Paediatrica Indonesiana Proceedings Book of International Conference and Exhibition on The Indonesian Medical Education and Research Institute
Sri Rezeki Hadinegoro, Sri Rezeki
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Health Professions Medicine & Pharmacology Neuroscience Public Health

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Journal : Paediatrica Indonesiana

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Community prevalence and distribution of dengue virus serotype based on antibody neutralization assay in Jakarta, Indonesia Karyanti, Mulya Rahma; Alam, Anggraini; Widyahening, Indah Suci; Hadinegoro, Sri Rezeki; Munasir, Zakiudin; Satari, Hindra Irawan; Sasmono, R. Tedjo
Paediatrica Indonesiana Vol. 65 No. 1 (2025): January 2025
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi65.1.2025.10-6

Abstract

Background Dengue infection is still rising globally despite the implementation of preventive efforts in many endemic countries. Monitoring the circulation of dengue virus (DENV) serotypes is not performed routinely in the Indonesian national surveillance program, primarily due to high cost and effort. Objective To evaluate the distribution of DENV serotypes based on serological profile and neutralizing antibody level against all four DENV serotypes in Jakarta, Indonesia. Methods This cross-sectional study was performed as part of a dengue vaccine effectiveness study, 10 years after a dengue vaccination program was initiated. It was conducted in five community public health centers in Jakarta in subjects aged 12 years and above who had not received the dengue vaccine. We collected serum samples and DENV neutralizing antibody titers were measured using a plaque reduction neutralization test (PRNT). Results Eighty healthy subjects with a median age of 15 (range 12-27) years were enrolled. The highest median antibody titer was that to DENV-2 [898 (range 29-91558) 1/dil], followed by that to DENV-3 [297.5 (range 10-36091); 1/dil], DENV-1 [288 (range 0-68237) 1/dil], and DENV-4 [164 (range 0-35812) 1/dil]. Neutralizing antibodies against the four DENV serotypes were found in all the 5 districts studied in Jakarta. A multitypic neutralizing antibody profile was observed in the majority (74/80 subjects; 92.5%). Three subjects were naïve. Conclusion All four dengue serotypes are widely circulating in Jakarta based on neutralizing antibody detection in the community, with the highest neutralizing antibody titer being against DENV-2, followed by DENV-3, DENV-1 and DENV-4.
Comparative analysis of COVID-19 incidence and neutralizing antibody response after primary COVID-19 vaccination and heterologous booster doses in adolescents vs. adults: the Indonesian experience Karyanti, Mulya Rahma; Satari, Hindra Irawan; Munasir, Zakiudin; Hadinegoro, Sri Rezeki; Widyahening, Indah Suci; Sasmono, R Tedjo
Paediatrica Indonesiana Vol. 65 No. 4 (2025): July 2025
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi65.4.2025.316-24

Abstract

Background The Indonesian COVID-19 immunization program has provided primary doses of a COVID-19 vaccine to adolescents and adults, while booster doses were given to adults only. Evaluation of this program is crucial to determine if boosters should be recommended for adolescents. Objective To compare COVID-19 incidence and SARS-CoV-2 IgG neutralizing antibody levels after COVID-19 vaccination in adolescents given a primary dose vs. adults given a primary dose and a booster. Methods: In this cross-sectional study, participants were given questionnaires on their COVID-19 history and evaluated for SARS-CoV-2 IgG neutralizing antibody titers. We included healthy individuals aged 12 years or older who resided in Jakarta and consented to participate, had received primary COVID-19 vaccine doses, and for adults, booster doses. Participants were stratified into two age groups, adolescents (12-17 years) and adults (18 years and above). We compared the incidence of COVID-19 and SARS-CoV-2 antibody titers between the two age groups. Results Out of 419 participants who met the inclusion criteria, 159 had blood specimens drawn for measurement of SARS-CoV-2 antibody titers. Before the widespread administration of the vaccine, the incidence of COVID-19 in was 4.9% in adolescents vs. 10.2% in adults (P=0.036). After widespread vaccination, the incidence of COVID-19 remained lower in adolescents than in adults (2.2% vs. 8.8%, respectively; P=0.005). The median SARS-CoV-2 antibody titer post-COVID-19 vaccination was 97.85 (range 46.46-98.23) U/mL in adults vs. 96.78 (range 22.08-98.23) U/mL in adolescents (P<0.05). Conclusion While the incidence of COVID-19 was significantly lower in vaccinated adolescents than in vaccinated adults, titers of SARS-CoV-2 IgG neutralizing antibody in adolescents were significantly lower compared to that of adults.
Co-Authors Alam , Anggraini Anggraini Alam, Anggraini Arhana, Arhana Djelantik, I.G.G. Hindra Irawan Satari Indah S. Widyahening Julitasari Sundoro Kusnandi Rusmil Mei Neni Sitaresmi Mulya Rahma Karyanti, Mulya Rahma Munasir , Zakiudin Novilia Sjafri Bachtiar Rahma Karyanti, Mulya Rini Mulia Sari Sasmono , R. Tedjo Sasmono, R. Tedjo Syafriyal Syafriyal, Syafriyal Widyahening , Indah Suci Zakiudin Munasir