BackgroundIndonesia reports the second highest dengue disease burden in the world; these data are from passive surveillance reports and are likely to be significant underestimates. Age-stratified seroprevalence data are relatively unbiased indicators of past exposure and allow understanding of transmission dynamics.Methodology/Principal FindingsTo better understand dengue infection history and associated risk factors in Indonesia, a representative population-based cross-sectional dengue seroprevalence study was conducted in 1–18-year-old urban children. From October to November 2014, 3,210 children were enrolled from 30 geographically dispersed clusters. Serum samples were tested for anti-dengue IgG antibodies by indirect ELISA. A questionnaire investigated associations between dengue serologic status and household socio-demographic and behavioural factors. Overall, 3,194 samples were tested, giving an adjusted national seroprevalence in this urban population of 69.4% [95% CI: 64.4–74.3] (33.8% [95% CI: 26.4–41.2] in the 1–4-year-olds, 65.4% [95% CI: 69.1–71.7] in the 5–9-year-olds, 83.1% [95% CI: 77.1–89.0] in the 10–14-year-olds, and 89.0% [95% CI: 83.9–94.1] in the 15–18-year–olds). The median age of seroconversion estimated through a linear model was 4.8 years. Using a catalytic model and considering a constant force of infection we estimated 13.1% of children experience a primary infection per year. Through a hierarchical logistic multivariate model, the subject’s age group (1–4 vs 5–9 OR = 4.25; 1–4 vs. 10–14 OR = 12.60; and 1–4 vs 15–18 OR = 21.87; p<0.0001) and the number of cases diagnosed in the household since the subject was born (p = 0.0004) remained associated with dengue serological status.Conclusions/SignificanceThis is the first dengue seroprevalence study in Indonesia that is targeting a representative sample of the urban paediatric population. This study revealed that more than 80% of children aged 10 years or over have experienced dengue infection at least once. Prospective incidence studies would likely reveal dengue burdens far in excess of reported incidence rates.

BackgroundWHO recommended incorporation of Haemophilus influenzae type b (Hib) vaccination into immunization program. Indonesia would adopt Hib as a National Immunization Program in 2013. We aimed at analyzing immunogenicity, safety, and consistency of a new combined DTP-HB-Hib (diphtheria-tetanus-pertussis-Hepatitis B-Haemophilus influenza B) vaccine.MethodsA prospective, randomized, double blind, multicenter, phase III study of Bio Farma DTP-HB-Hib vaccine conducted in Jakarta and Bandung, August 2012 - January 2013.Subjects were divided into three groups with different batch number. Healthy infants 6–11 weeks of age at enrollment were immunized with 3 doses of DTP-HB-Hib vaccine with interval of 4 weeks, after birth dose of hepatitis B vaccine. Blood samples obtained prior to vaccination and 28 days after the third dose. Safety measures recorded until 28 days after each dose.ResultsOf 600 subjects, 575 (96 %) completed study protocol. After 3 doses, 100.0 and 96.0 % had anti-PRP concentration ≥0.15 and ≥1.0 μg/ml. Anti-diphtheria and anti-tetanus concentration ≥0.01 IU/ml detected in 99.7 and 100.0 %; while concentration ≥0.1 IU/ml achieved in 84.0 and 97.4 %. Protective anti-HBs found in 99.3 %. The pertussis vaccine response rate was 84.9 %.None Serious Adverse events (SAEs) considered related to study vaccine or procedure.ConclusionsThe 3-dose of DTP-HB-Hib was immunogenic, well tolerated and suitable for replacement of licensed-equivalent vaccines based on immunologic and safety profiles.Trial registrationNCT01986335 – October 30th 2013.

“Transitional-age youth” describes those whose ages range from 16–24 years old. In this phase, the youth face new challenges and new experiences which may increase the risk for having mental health problems, yet not very many seek help from mental health professionals. In Indonesia, no data are available about mental health problems and the needs of transitional-age youth. This study explores common mental health problems experienced during this stage and assesses how they cope with problems and their expectations from health services. This was a cross-sectional study involving 393 Indonesians aged 16–24 years in May 2020. More than 90% of students had financial and academic difficulties and felt lonely. The most prevalent mental health problem among students was anxiety (95.4%). Most of the students, ranging from 90% to 96.4%, had positive coping strategies. However, around 50% of respondents reported self-harming and having suicidal thoughts. The results of subcategories analysis between ages and faculties were similar. Their most important expectations from mental health services included confidentiality (99.2%) and being welcoming and friendly (99.2%). In conclusion, this study highlighted the most common problems transitional-age youth experience in Indonesia. While some of them already knew how to deal with their problems, not all the participants had good coping mechanisms. Their healthcare expectations were also explored, thereby providing a useful background to revise and amend the current conditions.

Introduction There is a high global incidence of typhoid fever, with an annual mortality rate of 200,000 deaths. Typhoid fever also affects younger children, particularly in resource-limited settings in endemic countries. Typhoid vaccination is an important prevention tool against typhoid fever. However, the available polysaccharide typhoid vaccines are not recommended for children under 2 years of age. A new typhoid conjugate Vi-diphtheria toxoid (Vi-DT) vaccine has been developed for infant immunization. We aimed to define the safety and immunogenicity of the Vi-DT vaccine among adults and children in Indonesia. Methods An observational, blinded, comparative, randomized, phase I safety study in two age de-escalating cohorts was conducted in East Jakarta, Indonesia, from April 2017 to February 2018. We enrolled 100 healthy subjects in 2 age groups: adults and children (18–40 and 2–5 years old). These groups were randomized into study groups (Vi-DT vaccine), and comparator groups (Vi-polysaccharide (Vi-PS) vaccine and another additional vaccine) which was administered in 4 weeks apart. Subjects were followed up to six months. Result One hundred healthy adults and children subjects completed the study. The Vi-DT and Vi-PS vaccines showed no difference in terms of intensity of any immediate local and systemic events within 30 minutes post-vaccination. Overall, pain was the most common local reaction, and muscle pain was the most common systemic reaction in the first 72 hours. No serious adverse events were deemed related to vaccine administration. The first and second doses of the Vi-DT vaccine induced seroconversion and higher geometric mean titers (GMT) in all subjects compared to that of baseline. However, in terms of GMT, the second dose of Vi-DT did not induce a booster response. Conclusion The Vi-DT vaccine is safe and immunogenic in adults and children older than two years. A single dose of the vaccine is able to produce seroconversion and high GMT in all individuals.

This probiotic food supplement tested did not reduce the duration of acute infectious diarrhea as compared to oral rehydration and zinc.

Background: Indonesia has a high number of COVID-19 cases and mortalities relative to not only among the Asia Pacific region but the world. Children were thought to be less affected by the virus compared to adults. Most of the public data reported combined data between adults and children. The Indonesian Pediatric Society (IPS) was involved in the COVID-19 response, especially in the area of child health. One of IPS's activities is collecting data registries from each of their chapters to provide a better understanding of COVID-19 in children.Objective: The objective of this study was to share the data of suspected and confirmed COVID-19 cases in children from IPS's COVID-19 data registry.Method: This is a retrospective study from the IPS's COVID-19 registry data. We collected the data of COVID-19 in children during March to December 2020 from each of the IPS chapters. We analyzed the prevalence, case fatality rate (CFR), age groups, diagnosis, and comorbidities of the children diagnosed with COVID-19.Result: As of December 21, 2020, there were 35,506 suspected cases of children with COVID-19. In total, there were 522 deaths, with a case fatality ratio (CFR) of 1.4. There were 37,706 confirmed cases with 175 fatalities (CFR 0.46). The highest mortality in confirmed COVID-19 cases was from children ages 10–18 years (42 out of 159 cases: 26%). The most common comorbidity and diagnosis found were malignancy (17.3%) and respiratory failure (54.5%).Conclusion: The CFR of confirmed COVID-19 cases in children in Indonesia is high and should be a major public concern.

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Background Growth and developmental delays are common among children under the age of five years (under-five children), especially in slum areas. Early detection and intervention may give better prognoses. Objective To detect growth and developmental delays and related risk factors among under-five children living in an inner-city slum area of the Indonesian capital. Methods This cross-sectional study was conducted from October to November 2018 in Tanah Tinggi, Johar Baru District, an inner-city slum area in Central Jakarta. Subjects were healthy children aged 3–60 months. Socioeconomic profile was obtained through questionnaires, anthropometric data through measurements, and developmental status through the Kuesioner Pra Skrining Perkembangan (KPSP) instrument. Development was considered to be delayed for KPSP scores <9. Data were analyzed using Chi-square test. Results Of 211 subjects, prevalence of underweight, stunting, and wasting were 35.1%, 28.0%, and 20.9%, respectively, meanwhile low maternal education, and low family income were 57.9% and 75%. The prevalence of developmental delay was 10%, while suspected developmental delay was 26.1%. The prevalence increased from age 21 months and peaked at 36 months. Associated risk factors were low maternal education, low family income, underweight weight-for-age, stunted height-for-age, and microcephalic head circumference-for-age. Conclusion Low education and low income were significant risk factors for growth and developmental delay.