Uptake of COVID-19 vaccinations amongst 3,433,483 children and young people across four nations in the UK

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Sarah J Aldridge
Utkarsh Agrawal
Siobhán Murphy
Tristan Millington
Ashley Akbari
Fatima Almaghrabi
Sneha N Anand
Stuart Bedston
Rosalind Goudie
Rowena Griffiths
Mark Joy
Emily Lowthian
Simon de Lusignan
Lynsey Patterson
Chris Robertson
Igor Rudan
Declan T Bradley
Ronan Lyons
Aziz Sheikh
Rhiannon K Owen

Abstract

Background and Objectives
SARS-CoV-2 infection in children and young people (CYP) can lead to life threatening conditions including COVID-19, transmission to more vulnerable individuals, or even long COVID. Vaccination against COVID-19 reduces the chance of infection and transmission of the virus, but vaccine uptake in the UK has been shown to decrease with age.


Approach
We undertook a multistate-model approach to estimate hazard ratios on national cohorts constructed from linked health and administrative data, adjusting for several demographic factors. The models were applied to 3,433,483 CYP aged 5-17 years between 4th August 2021 and 31st May 2022. The results were combined in a random effects meta-analysis.


Results
Uptake of the first COVID-19 vaccine in CYP was lower compared to older age groups in the UK, and diminished further with subsequent doses (34%, 20% and 2% for 1st, 2nd, and booster dose respectively). Age of the CYP and vaccination status of the adults in the household were identified as important risk factors. For example, 5-11-year-olds were less likely to receive their first vaccine compared to 16-17-year-olds (adjusted Hazard Ratio [aHR]: 0.10 (95%CI: 0.06-0.19), and CYP in unvaccinated households were less likely to receive their first vaccine compared to partially vaccinated households (aHR: 0.19, 95%CI 0.13-0.29).


Conclusions and Implications 
Our work highlights the need for targeted strategies to increase COVID-19 vaccine acceptance and uptake among CYP, especially considering the influence of parental consent and household factors. Further research could help identify risk factors in household types to investigate more direct associations, which may be influenced by factors such as living with vulnerable people, familial structure, or deprivation.

Article Details

How to Cite
Aldridge, S. J., Agrawal, U., Murphy, S., Millington, T., Akbari, A., Almaghrabi, F., Anand, S. N., Bedston, S., Goudie, R., Griffiths, R., Joy, M., Lowthian, E., de Lusignan, S., Patterson, L., Robertson, C., Rudan, I., Bradley, D. T., Lyons, R., Sheikh, A. and Owen, R. K. (2024) “Uptake of COVID-19 vaccinations amongst 3,433,483 children and young people across four nations in the UK”, International Journal of Population Data Science, 9(5). doi: 10.23889/ijpds.v9i5.2736.

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