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

Martina Ferrari, Lorenza Di Marco, Alessandra Pivetti

    Emerging Infectious Diseases
    |May 30, 2023
    PubMed

    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.

    Keywords:
    COVID-19ItalySARS-CoV-2antibodiesblood donor populationrespiratory infectionsserologic analysisviruses

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