A case report describing the immune response of an infant with congenital heart disease and severe COVID-19.
Commun Med (Lond)
; 1: 47, 2021.
Article
in English
| MEDLINE | ID: covidwho-1860419
ABSTRACT
Background:
Children with SARS-CoV-2 infection generally present with milder symptoms or are asymptomatic in comparison with adults, however severe disease occurs in a subset of children. To date, the immune correlates of severe COVID-19 in young children have been poorly characterised.Methods:
We report the kinetics of immune responses in relation to clinical and virological features in an infant with acute severe COVID-19 using high-dimensional flow cytometry and multiplex cytokine analysis.Results:
Systemic cellular and cytokine profiling show an initial increase in neutrophils and monocytes with depletion of lymphoid cell populations (particularly CD8 + T and NK cells) and elevated inflammatory cytokines. Expansion of memory CD4 + T (but not CD8 + T) cells occurred over time, with a predominant Th2 bias. Marked activation of T cell populations observed during the acute infection gradually resolved as the child recovered. Substantial in vitro activation of T-cell populations and robust cytokine production, in response to inactivated SARS-CoV-2 stimulation, was observed 3 months after infection indicating durable, long-lived cellular immune memory.Conclusions:
These findings provide important insights into the immune response of a young infant with severe COVID-19 and will help to inform future research into therapeutic targets for high-risk groups.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Case report
/
Experimental Studies
/
Prognostic study
/
Randomized controlled trials
Topics:
Long Covid
Language:
English
Journal:
Commun Med (Lond)
Year:
2021
Document Type:
Article
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