Laboratory-based surveillance of COVID-19 in the Greater Helsinki area, Finland, February-June 2020

  1. H Jarva
  2. M Lappalainen
  3. O Luomala
  4. P Jokela
  5. AE Jääskeläinen
  6. AJ Jääskeläinen
  7. H Kallio-Kokko
  8. E Kekäläinen
  9. L Mannonen
  10. H Soini
  11. S Suuronen
  12. A Toivonen
  13. C Savolainen-Kopra
  14. R Loginov
  15. S Kurkela
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Abstract

Laboratory registry data (80,791 specimens, 70,517 individuals) was used to characterise age- and sex-specific SARS-CoV-2 RT-PCR sampling frequency and positivity rate, and laboratory capacity building in Greater Helsinki, Finland during February-June 2020. While the number of positive cases was similar in males and females, the positivity rate was significantly higher in males. The highest incidence/100,000 was observed in those aged ≥80 years. The proportion of young adults in positive cases increased in late May 2020.

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