Real-Time SARS-CoV-2 Genotyping by High-Throughput Multiplex PCR Reveals the Epidemiology of the Variants of Concern in Qatar

Summary: A study showed that the mRNA-1273 vaccine is highly effective against the B.1.1.7 and B.1.351 variants of concern, with efficacy rates of 100% and 96.4% respectively. The vaccine's effectiveness increases rapidly in the weeks following the first dose, reaching maximum efficacy after the second dose, providing strong protection against severe COVID-19 outcomes.