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The Food and Drug Administration authorized Novavax‘s updated protein-based Covid vaccine for emergency use in people ages 12 and up on Friday, paving the way for the shot to compete with Pfizer and Moderna‘s jabs this fall and winter.
Novavax’s vaccine targets the highly contagious omicron subvariant JN.1, which began circulating widely in the U.S. earlier this year. JN.1 only accounted for 0.2% of cases circulating nationwide as of this week, according to the latest Centers for Disease Control and Prevention data.
Novavax manufactures protein-based vaccines, which cannot be quickly updated to target another strain of the virus.
Despite that, the biotech company has noted that its shot provides protection against descendants of JN.1 that are currently dominant in the U.S., including KP.2.3, KP.3, KP.3.1.1 and LB.1.
Shares of Novavax rose more than 5% on Friday following the announcement. The company didn’t immediately respond to a request for comment on the authorization.
The FDA’s decision comes only a week after it approved a new round of messenger RNA shots from Pfizer and Moderna, which both target another offshoot of JN.1 called KP.2. Last year, the agency authorized Novavax’s shot nearly a month after clearing vaccines from its rivals, putting the company at a disadvantage.
Public health officials see Novavax’s vaccine as a valuable alternative for people who don’t want to take mRNA shots from Pfizer and Moderna, which use a newer vaccine method to teach cells how to make proteins that trigger an immune response against Covid. Novavax’s shot, meanwhile, fends off the virus with protein-based technology, a decades-old method used in routine vaccinations against hepatitis B and shingles.
It’s unclear how many people will get a new Covid shot this fall and winter.
Only around 22.5% of U.S. adults received the latest round of shots that came out last fall, according to CDC data through early May.