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June 15, 2021, 9:36 a.m. EDT

Novavax says efficacy of COVID-19 vaccine isn't affected when co-administered with the flu shot

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By Jaimy Lee

Shares of Novavax Inc. /zigman2/quotes/202614340/composite NVAX -2.54% were down 0.9% in trading on Tuesday, the day after the company said a study evaluating co-vaccination against COVID-19 and the flu demonstrated similar efficacy to administering Novavax's experimental COVID-19 shot alone. "Separate health care visits to cover both COVID-19 and influenza vaccinations will be burdensome," a Novavax executive said in a news release. As part of the Phase 3 clinical trial for its coronavirus vaccine in the U.K., the company also enrolled 431 participants in a sub-study that gave participants both the COVID-19 vaccine and the flu shot. In the preprint , published Sunday, the researchers found that the immunogenicity of the flu shot was the same, while there was a "modest decrease" in the immunogenicity of the COVID-19 shot. Novavax also announced this week that its coronavirus vaccine had an efficacy rate of 90.4% when it comes to preventing symptomatic infection in roughly 30,000 participants enrolled in the Phase 3 clinical trial in the U.S. Novavax's stock has soared 86.2% so far this year, while the S&P 500 /zigman2/quotes/210599714/realtime SPX -0.54% is up 13.3%.

/zigman2/quotes/202614340/composite
US : U.S.: Nasdaq
$ 179.33
-4.67 -2.54%
Volume: 2.20M
July 30, 2021 4:00p
P/E Ratio
N/A
Dividend Yield
N/A
Market Cap
$13.29 billion
Rev. per Employee
$601,262
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/zigman2/quotes/210599714/realtime
US : S&P US
4,395.26
-23.89 -0.54%
Volume: 2.25B
July 30, 2021 5:06p
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