Peer-Reviewed Publication
Psychol Med2026;56e282.September 21, 2026Journal Article

Psychiatric outcomes after streptococcal upper respiratory tract infection in children.

Danish Hafeez1, Katharine Lynch-Kelly1, Cameron Watson2, Sarah Williford3, Mark Edwards4, Thomas A Pollak1
1Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King's College London, UK.
2MRC Social Genetic and Developmental Psychiatry Research Centre: King's College London, UK.
3TriNetX LCC, Cambridge, USA.
4Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience: King's College London, UK.

Abstract

BACKGROUND: Associations between childhood streptococcal upper respiratory infections and subsequent psychiatric outcomes have been described for over 25 years, although clinical evidence remains limited. This study explored psychiatric outcomes after pediatric streptococcal versus non-streptococcal upper respiratory tract infections. METHODS: This retrospective cohort study used TriNetX, a globa…

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