Immunocompromised patients with prolonged coronavirus disease 2019 symptoms present diagnostic and therapeutic challenges. We measured viral nucleocapsid antigenemia in 3 patients treated with anti-CD20 immunotherapy who acquired severe acute respiratory syndrome coronavirus 2 infection and experienced protracted symptoms. Our results support nucleocapsid antigenemia as a marker of persistent infection and therapeutic response.
Keywords: SARS-CoV-2; antigenemia; diagnostics; immunocompromised.
© The Author(s) 2022. Published by Oxford University Press on behalf of Infectious Diseases Society of America.