Please use this identifier to cite or link to this item: http://conacyt.repositorioinstitucional.mx/jspui/handle/1000/8021
A methodological framework for assessing the benefit of SARS-CoV-2 vaccination following previous infection: case study of five to eleven year olds
Christina Pagel
Harrison Wilde
Christopher Tomlinson
Bilal Akhter Mateen
Katherine Brown
Acceso Abierto
Atribución-NoComercial-SinDerivadas
https://doi.org/10.1101/2023.04.11.23288409
Vaccination rates against SARS-CoV-2 in children aged five to 11 years remain low in many countries. The current benefit of vaccination in this age group has been questioned given that the large majority of children have now experienced at least one SARS-CoV-2 infection. However, protection from infection, vaccination or both wanes over time. National decisions on offering vaccines to this age group have tended to be made without considering time since infection. There is an urgent need to evaluate the additional benefits of vaccination in previously infected children and under what circumstances those benefits accrue. We present a novel methodological framework for estimating the potential benefits of COVID-19 vaccination in previously infected children aged five to 11, accounting for waning. We apply this framework to the UK context and for two adverse outcomes: hospitalisation related to SARS-CoV-2 infection and Long Covid. We show that the most important drivers of benefit are: the degree of protection provided by previous infection; the protection provided by vaccination; the time since previous infection; and future attack rates. Vaccination can be very beneficial for previously infected children if future attack rates are high and several months have elapsed since the previous major wave in this group. Benefits are generally larger for Long Covid than hospitalisation, because Long Covid is both more common than hospitalisation and previous infection offers less protection against it. Our framework provides a structure for policy makers to explore the additional benefit of vaccination across a range of adverse outcomes and different parameter assumptions. It can be easily updated as new evidence emerges.
bioRxiv
12-04-2023
Preimpreso
Inglés
Público en general
VIRUS RESPIRATORIOS
Versión publicada
publishedVersion - Versión publicada
Appears in Collections:Materiales de Consulta y Comunicados Técnicos

Upload archives


File SizeFormat 
2023.04.11.23288409v3.full.pdf1.55 MBAdobe PDFView/Open