As many as one in seven children who get coronavirus could have symptoms almost four months later, according to the world's largest study on long Covid in children.
People who tested positive were twice as likely to report three or more symptoms 15 weeks later than those who tested negative, research led by University College London and Public Health England found.
Lead author Professor Terence Stephenson said he feels "reassured" by the data, which he said shows it is "nowhere near what people thought in the worst-case scenario".
The researchers said their findings will be presented to the Joint Committee on Vaccination and Immunisation (JCVI) - which has yet to give a decision on extending the Covid-19 vaccine rollout to all 12 to