Is Novavax the Leader in Developing a Combo COVID/Flu Vaccine?

Is Novavax the Leader in Developing a Combo COVID/Flu Vaccine?

Source: 
Motley Fool
snippet: 

Novavax (NASDAQ:NVAX) hasn't won Emergency Use Authorization (EUA) for its COVID-19 vaccine yet. However, the company might do so relatively soon. It's also exploring the potential for a combination of its COVID-19 vaccine and its promising flu vaccine candidate, NanoFlu.