On Aug. 4, 2021, Novavax announced that it had reached an agreement with the European Commission (EC) for the purchase of up to 200 million doses of NVX-CoV2373, the company’s recombinant nanoparticle protein-based COVID-19 vaccine candidate with Matrix-Mﾙ adjuvant.

In a Phase 3 clinical trial with nearly 30,000 adults in the United States and Mexico, NVX-CoV2373 demonstrated 100% protection against moderate and severe disease and 90.4% overall efficacy. In a Phase 3 clinical trial conducted in the United Kingdom with approximately 15,000 adults, NVX-CoV2373 showed an overall efficacy of 89.7%, and more than 96% efficacy against the original strain of the virus.

NVX-CoV2373 is a protein-based vaccine candidate engineered from the genetic sequence of the first strain of SARS-CoV-2, the virus that causes COVID-19 disease. NVX-CoV2373 was created using Novavax’ recombinant nanoparticle technology to generate antigen derived from the coronavirus spike (S) protein and is formulated with Novavax’ patented saponin-based Matrix-M™ adjuvant to enhance the immune response and stimulate high levels of neutralizing antibodies.