Multiplex qPCR discriminates variants of concern to enhance global surveillance of SARS-CoV-2. - Vogels CBF; Breban MI; Ott IM; Alpert T; Petrone ME; Watkins AE; Kalinich CC; Earnest R; Rothman JE; Goes de Jesus J; Morales Claro I; Magalhães Ferreira G; et al. (PLoS biology, 2021)