Emerging Infectious Diseases (Jul 2023)

Long-Term SARS-CoV-2 Antibody Seroprevalence in Blood Donors, Italy

  • Martina Ferrari,
  • Lorenza Di Marco,
  • Alessandra Pivetti,
  • Stefania Paduano,
  • Chiara Vecchi,
  • Veronica Bernabucci,
  • Rosina Maria Critelli,
  • Simone Lasagni,
  • Monica De Maria,
  • Donatella Venturelli,
  • Monica Pecorari,
  • Giorgia Boaretto,
  • Giulia Fregni Serpini,
  • Dante Romagnoli,
  • Roberto Mantovani,
  • Giovanni Battista Ceccherelli,
  • Erica Villa

DOI
https://doi.org/10.3201/eid2907.221745
Journal volume & issue
Vol. 29, no. 7
pp. 1479 – 1481

Abstract

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We evaluated SARS-CoV-2 antibody response in voluntary blood donors in Italy at different timepoints. Immediately after lockdown easing, 908/25,657 donors (3.5%) had low IgG titers against nucleocapsid. In the next 2 years, titers increased despite few COVID-19 symptoms. On multivariate analysis, allergic rhinitis was associated with reduced risk for symptomatic COVID-19.

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