A new study from UK investigators shows that — while most COVID-19 patients ages 11 to 17 who reported long-COVID symptoms 3 months after the initial infection no longer experienced lingering symptoms at 2 years — 29% still did.

The findings, published in the journal Communications Medicine, come from the National Long COVID in Children and Young People cohort study, which followed up on thousands of young people after their COVID-19 diagnoses.