Sensitive detection of SARS-CoV-2 seroconversion by flow cytometry reveals the presence of nucleoprotein-reactive antibodies in unexposed individuals
Egia-Mendikute et al. develop a multiplexed flow cytometric bead array to simultaneously detect antibodies reactive to three immunogenic SARS-CoV-2 proteins. More sensitive than ELISA, they detected N-reactive antibodies in COVID-19-negative individuals with this assay, showing it to have superior potential to detect low antibody titres compared to current gold standard serology methods.
Leire Egia-Mendikute, Alexandre Bosch, Endika Prieto-Fernández, So Young Lee, Borja Jiménez-Lasheras, Ana García del Río, Asier Antoñana-Vildosola, Chiara Bruzzone, Maider Bizkarguenaga, Nieves Embade, Rubén Gil-Redondo, María Luz Martínez-Chantar, Marcos López-Hoyos, Nicola G. A. Abrescia, José M. Mato, Óscar Millet, Asís Palazón