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Risk factors for diphtheria outbreak in children aged 1-10 years in East Kalimantan Province, Indonesia.

ABSTRACT: Background: Diphtheria remains a health problem, especially in developing countries. In November 2017, the Indonesian Ministry of Health stated that there was a diphtheria outbreak in Indonesia. East Kalimantan is one of the provinces that experienced this disease outbreak. This study analyzes the risk factors for diphtheria outbreak in children aged 1-10 years. Methods: A case-control study was conducted on 37 respondents. Research variables consist of immunization status against diphtheria, pertussis and tetanus (DPT), nutritional status, children mobility, source of transmission, physical home environment (natural lighting, ventilation area, occupancy density, wall and floor type), knowledge of diphtheria and attitudes towards the diphtheria prevention program. Results: We found that the most of the children who had diphtheria had been immunized against DPT. Additionally the nutritional status of children (p=0.049), mobility (p=0.000) and the source of transmission (p=0.020) were significantly associated with diphtheria. Conclusions: Child/parent mobility (OR=8.456) is the main risk factor for diphtheria outbreak. It is recommended to limit the mobility of children to travel to areas that are experiencing increased cases of diphtheria, improve the nutritional status, and further research on the effectiveness of diphtheria vaccine.

SUBMITTER: Muhamad Ramdan I

PROVIDER: S-EPMC6844134 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Risk factors for diphtheria outbreak in children aged 1-10 years in East Kalimantan Province, Indonesia.

Muhamad Ramdan Iwan I Susanti Rahmi R Ifroh Riza Hayati RH Noviasty Reny R

F1000Research 20181010

<b>Background</b>: Diphtheria remains a health problem, especially in developing countries. In November 2017, the Indonesian Ministry of Health stated that there was a diphtheria outbreak in Indonesia. East Kalimantan is one of the provinces that experienced this disease outbreak. This study analyzes the risk factors for diphtheria outbreak in children aged 1-10 years. <b>Methods:</b> A case-control study was conducted on 37 respondents. Research variables consist of immunization status against ...[more]

PMID: 31723410

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Project description:BackgroundDengue fever is a febrile disease caused by dengue virus (DENV), which affects people throughout the tropical and subtropical regions of the world, including Indonesia. East Kalimantan (Borneo) province suffered a dramatic increase in dengue cases in 2015 and 2016, making it the province with the second highest incidence of dengue in Indonesia. Despite this, dengue in East Kalimantan is understudied; leaving transmission dynamics of the disease in the area are mostly unknown. In this study, we investigate the factors contributing to the outbreaks in East Kalimantan.MethodsProspective clinical and molecular virology study was conducted in two main cities in the province, namely Samarinda and Balikpapan, in 2015-2016. Patients' clinical, hematological, and demographic data were recorded. Dengue detection and confirmation was performed using NS1-antigen and IgG/IgM antibody detection. RT-PCR was conducted to determine the serotypes of the virus. Phylogenetic analysis was performed based on envelope gene sequences.ResultsThree hundred patients with suspected dengue were recruited. Among these, 132 (44%) were diagnosed with dengue by NS1 antigen and/or nucleic acid detection. The majority of the infections (60%) were primary, with dengue hemorrhagic fever (DHF) the predominant manifestation (71.9%). Serotyping detected all four DENV serotypes in 112 (37.3%) cases, with the majority of patients (58.9%) infected by DENV-3. Phylogenetic analysis based on envelope gene sequences revealed the genotypes of the viruses as DENV-1 Genotype I, DENV-2 Cosmopolitan, and DENV-3 Genotype I. Most virus strains were closely-related to strains from cities in Indonesia.ConclusionsOur observations indicate that multiple introductions of endemic DENV from surrounding cities in Indonesia, coupled with relatively low herd immunity, were likely responsible for the outbreak of the dominant viruses. The study provides information on the clinical spectrum of the disease, together with serology, viral genetics, and demographic data, which will be useful for better understanding of dengue disease in Borneo.

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Risk factors for diphtheria outbreak in children aged 1-10 years in East Kalimantan Province, Indonesia.

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Risk factors for diphtheria outbreak in children aged 1-10 years in East Kalimantan Province, Indonesia.

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