Abstract
Objective
To compare the long-term seroprotection (anti-HBs ≥10 IU/L) in children living with HIV (CLHIV) receiving a 3- or 4-dose double-strength (20 µg) recombinant Hepatitis B virus (rHBV) vaccination.
Methods
We present anti-retroviral therapy (ART) clinic based follow-up data collected from January, 2021 to August, 2022, from CLHIV who had received either 3-dose or 4-dose double-strength (20 µg) rHBV vaccination, after 36–42 months and assessed for anti-HBs titres, naïve and memory T-helper lymphocytes, CD4 counts and HIV viral load. Children found unprotected after primary immunization, were administered a single double-strength rHBV vaccine booster dose (20 µg) and seroprotection was reassessed after 4 and 12 weeks.
Results
Out of 50 children initially vaccinated, 45 were followed up 36–42 months after primary immunization; median (IQR) anti-HBs titres (IU/L) were 230 (80.5–305.7) in the 3-dose group (n=23) and 263.5 (47.1–332.9) in the 4-dose group (n=22) (P=0.33). 19 and 20 children in the 3-dose and 4-dose group, respectively, were seroprotected (P=0.24). Anti-HBs titres at 36–42 months correlated with CD4 counts at baseline, anti-HBs titres at 1 and 6 months after completion of primary immunization and percentage of memory T-helper lymphocytes. All the five children (3-dose group: 4; 4-dose group: 1) who received rHBV vaccine booster dose attained seroprotection one-month later.
Conclusion
Three-dose double strength rHBV vaccination schedule offers comparable seroprotection to a 4-dose double strength rHBV vaccination schedule in CLHIV receiving ART.
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Funding
Funding: Intramural research grant for post-graduate thesis (NY).
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Contributors: NY: data collection, analysis and interpretation, drafted the manuscript and revised it; PD: conceptualized the study, data analysis and interpretation, drafted the manuscript and provided critical inputs; SG: data interpretation, critical inputs in manuscript; BK, RG: laboratory methods, data collection and interpretation, provided critical inputs in the manuscript. All authors approved final manuscript and are accountable for the contents.
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Ethics clearance: Institutional Ethics Committee for Human Research of University College of Medical Sciences; No.: IECHR/2020/PG/68-R1 dated Dec 21, 2020.
Competing interest: None stated.
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Note: V Balagopal Raju Award (second prize) at the PEDICON 2023 of the Indian Academy of Pediatrics, Gujarat (NY).
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Yadav, N., Dewan, P., Gomber, S. et al. Seroprotection With Three Dose vs Four Dose Schedule for Hepatitis B Vaccination in Children Living With Human Immunodeficiency Virus: Follow-up Data at 36–42 Months From a Randomized Controlled Trial. Indian Pediatr 60, 935–938 (2023). https://doi.org/10.1007/s13312-023-3040-9
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DOI: https://doi.org/10.1007/s13312-023-3040-9