Projects per year
Abstract
Omicron variants of SARS-CoV-2 are globally dominant and infection rates are very high in children. We measure immune responses following Omicron BA.1/2 infection in children aged 6-14 years and relate this to prior and subsequent SARS-CoV-2 infection or vaccination. Primary Omicron infection elicits a weak antibody response with poor functional neutralizing antibodies. Subsequent Omicron reinfection or COVID-19 vaccination elicits increased antibody titres with broad neutralisation of Omicron subvariants. Prior pre-Omicron SARS-CoV-2 virus infection or vaccination primes for robust antibody responses following Omicron infection but these remain primarily focussed against ancestral variants. Primary Omicron infection thus elicits a weak antibody response in children which is boosted after reinfection or vaccination. Cellular responses are robust and broadly equivalent in all groups, providing protection against severe disease irrespective of SARS-CoV-2 variant. Immunological imprinting is likely to act as an important determinant of long-term humoral immunity, the future clinical importance of which is unknown.
Original language | English |
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Article number | 3845 |
Number of pages | 9 |
Journal | Nature Communications |
Volume | 14 |
Issue number | 1 |
DOIs | |
Publication status | Published - 29 Jun 2023 |
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Dive into the research topics of 'Immunological imprinting of humoral immunity to SARS-CoV-2 in children'. Together they form a unique fingerprint.Projects
- 2 Finished
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A UK underpinning platform to study immunology and immunopathology of COVID-19:The UK Coronavirus Immunology Consortium
Duggal, N., Zuo, J., Moss, P., Long, H., Lord, J., Taylor, G. & Wraith, D.
20/08/20 → 31/10/22
Project: Research Councils