Novavax is developing a purified protein vaccine using a baculovirus expression system similar to that used for flu vaccines.

“in terms of the um the purified protein vaccine the probably the the company that's the farthest along is novovax they use a baccalovirus expression system so basically you have a baklavirus into which you insert in this case the the gene the codes for the coronavirus Spike protein and that's grown up into in butterfly cells basically spadoptera fruity parasols it's the exact same way we make flu block so there's a lot of uh experience experience to make using that technology to make a vaccine”