Postvaccination SARS-CoV-2 Alpha (B.1.1.7) lineage infection among healthcare workers on the background of IgG antibodies.
Ivaylo AlexievIvan IvanovIvva PhilipovaNelly KorsunIvan StoikovReneta DimitrovaLyubomira GrigorovaAnna GanchevaIvelina TrifonovaVeselin DobrinovIliana GrigorovaAlexey SavovBoryana AsenovaMassimo CiccozziTodor KantardjievPublished in: Journal of medical virology (2021)