Novavax on Monday said that it submitted a request to the Food and Drug Administration (FDA) for an emergency use authorization (EUA) for its COVID-19 vaccine. 

The request was based in part on results from two large clinical trials of approximately 30,000 participants in the U.S. and Mexico that the company said demonstrated an overall efficacy of approximately 90 percent.

“We’re extremely proud of the work of our teams and we look forward to FDA’s review of our EUA request. We believe our vaccine offers a differentiated option built on a well-understood protein-based vaccine platform that can be an alternative to the portfolio of available vaccines to help fight the COVID-19 pandemic,” Stanley Erck, Novavax president and CEO, said in a statement. 


Novavax originally wanted to ask the FDA for authorization by May 2021, but had to delay the request due to numerous development and manufacturing setbacks.

The vaccine has been granted conditional authorization by multiple regulatory agencies worldwide, including the European Commission, and is listed for emergency use by the World Health Organization.