Prevalence of SARS-CoV-2-Antibodies in Danish Children and Adults

Maren J H Rytter1,2, Ulrikka Nygaard2,3, Ida Nikoline Mandic1

  • 1From the Department of Pediatrics and Adolescent Medicine, Slagelse Sygehus.

Insights

In Denmark, a study found similar low rates of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in children and adult blood donors in June 2020. Antibody prevalence was 1.6% in children and 2.0% in adults.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Immunology

Background:

  • The prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections in pediatric populations during the early stages of the pandemic remains an important area of research.
  • Understanding differential infection rates between age groups is crucial for public health strategies.

Purpose of the Study:

  • To assess and compare the seroprevalence of SARS-CoV-2 antibodies in children and adult blood donors in Denmark.
  • To determine if children experienced similar low-level SARS-CoV-2 exposure as the general adult population.

Main Methods:

  • A cross-sectional study was conducted in Denmark in June 2020.
  • Point-of-care testing was utilized to detect SARS-CoV-2 antibodies in 1033 children attending pediatric departments and 750 adult blood donors.

Main Results:

  • Antibodies to SARS-CoV-2 were detected in 1.6% of the children studied.
  • A comparable seroprevalence of 2.0% was observed in the adult blood donor group.
  • The difference in antibody detection between children and adults was not statistically significant (P = 0.58).

Conclusions:

  • Children and adults in Denmark were infected with SARS-CoV-2 to a similar, low degree during the study period.
  • The findings suggest comparable population-level exposure to the virus across these demographic groups in the assessed timeframe.