In a study taking data from across the USA, children and adolescents were found to have double the risk of developing long COVID after their second infection with SARS-CoV-2, the virus behind COVID-19. This goes against what many people assumed to be true – that your second run-in with the virus is generally less severe than the first – and provides more evidence that COVID is not necessarily always a “mild” disease in children. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

The data for the study were taken from the RECOVER database , and included patients aged under 21 who were treated at one of 40 different institutions across the United States. The researchers started with over 465,000 medical records.

All eligible patients h

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