antibody-mediated immunity. The relative resistance of SARS-CoV-2 variants B. 1.1. 7 and
B. 1.351 to antibody neutralization has been recently investigated. We report that another
emergent variant from Brazil, P. 1, is not only refractory to multiple neutralizing monoclonal
antibodies but also more resistant to neutralization by convalescent plasma and vaccinee
sera. The magnitude of resistance is greater for monoclonal antibodies than vaccinee sera …