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Long COVID-19 is rarely diagnosed in children: nationwide register-based analysis
  1. Ilari Kuitunen1,2
  1. 1 Department of Pediatrics, Mikkeli Central Hospital, Mikkeli, Finland
  2. 2 Institute of Clinical Medicine and Department of Pediatrics, University of Eastern Finland School of Medicine, Kuopio, Finland
  1. Correspondence to Dr Ilari Kuitunen, Mikkeli Central Hospital, Mikkeli, Finland; ilari.kuitunen{at}

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Long COVID-19 has been a hot topic in recent phases of the pandemic. Findings regarding the risk of long COVID-19 in children have been varying.1 2 First reports of children having long COVID-19 symptoms were published in fall 2020.3 International classification of diseases version 10 ICD-10 diagnostic code for long COVID-19 was introduced and adapted to electronic healthcare software in December 2020 in Finland. Currently, nationwide estimate of diagnosed long COVID-19 cases is lacking, and therefore, the aim of this letter is to describe the rates of diagnosed long COVID-19 cases in Finnish children.

This current study uses nationwide Care register for primary healthcare, which covers over 90% of the Finnish primary care facilities. Finland has universal …

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  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; internally peer reviewed.