On 11 March, Novavax, Inc. said its investigational protein-based COVID-19 vaccine, NVX-CoV2373, demonstrated high levels of efficacy against both the original SARS-CoV-2 strain – 96.4% – and the B.1.1.7 strain that originated in the UK, with an efficacy level of 86.3%.
But the bigger question is how it will fare against newer strains, particularly the South African B.1.351 variant, which has...







