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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Medise, Bernie Endyarni Soedjatmiko, Soedjatmiko Gunardi, Hartono Sekartini, Rini Satari, Hindra Irawan Hadinegoro, Sri Rezeki Wirahmadi, Angga Puspita, Mita Sari, Rini Mulia Yang, Jae Seung Sil, Arijit Sahastrabuddhe, Sushant Bachtiar, Novilia Sjafri |
| Abstract | Background Typhoid fever caused by Salmonella enteric serovar Typhi (S. Typhi) is a common cause of morbidity in the world. In 2017, 14.3 million cases of Typhoid and paratyphoid fever occurred globally. School age children between 3 to 19 years old are the most affected. Poor sanitation and multi drug resistance have increased the need for vaccines to reduce the global burden of disease. Based on previous trials, typhoid conjugate vaccines have longer- lasting protection, higher efficacy, require fewer doses and are suitable from infancy that allows them to be incorporated into the routine immunization program. Our previous phase I trial proved that a novel Vi-DT typhoid conjugate vaccine is safe and immunogenic in subjects 2–5 and 18–40 years. Our phase II trial consisted of subjects 6 months to 40 years. Our previously published paper on subjects 6 to < 24 months proved that this vaccine is safe and immunogenic for this age group. Therefore, with this paper we aimed to evaluate the safety and immunogenicity in children 2–11 years. Methods A randomized, observer-blind, superiority design of Vi-DT Typhoid conjugate vaccine compared to Vi-polysaccharide vaccine (Vi-PS) phase II study was conducted from October 2018 to December 2018 where 200 subjects aged 2–11 years were recruited. A blood sample prior to vaccination was taken, followed by administration of a single dose of either test vaccine (Vi-DT) or control vaccine (Vi-PS) and then a second blood sample was collected 28 days post vaccination. Adverse reactions were assessed and antibody increment was evaluated at 28 days post vaccination through collected serum sample. Results Pain was the most common local reaction. Fever and muscle pain were the most common systemic reactions. Both Vi-DT and Vi-PS groups had roughly the same number of adverse reactions. At 28 days post vaccination, 100% of subjects in the Vi-DT group and 93% of subjects in the Vi-PS group produced antibody increment ≥4 times. The Vi-DT group produced a higher GMT as compared to Vi-PS. Conclusion Vi-DT vaccine is safe and immunogenic in children 2–11 years old. Trial registration Trial registration number: NCT03460405 . |
| Related Links | https://bmcpediatr.biomedcentral.com/counter/pdf/10.1186/s12887-020-02375-4.pdf |
| Ending Page | 8 |
| Page Count | 8 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 14712431 |
| DOI | 10.1186/s12887-020-02375-4 |
| Journal | BMC Pediatrics |
| Issue Number | 1 |
| Volume Number | 20 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2020-10-15 |
| Access Restriction | Open |
| Subject Keyword | Pediatrics Internal Medicine Immunogenicity Safety Typhoid conjugate vaccine Vi-DT vaccine Vi-PS vaccine |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pediatrics, Perinatology and Child Health |
| Journal Impact Factor | 2/2023 |
| 5-Year Journal Impact Factor | 2.4/2023 |
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