17, only 5% of people in the United States had gotten the latest Covid vaccines, according to the Department of Health and Human Services.ĭaniel Park, an epidemiologist at George Washington University, said low rates might improve if people who felt lousy after their last mRNA shots gave Novavax a try. Numbers have dwindled further: As of Oct. ![]() Nearly 70% of people got the primary vaccines, compared with fewer than 20% opting for the mRNA Covid boosters released last year. Vaccine uptake has plummeted since the first shots became widely available in 2021. ![]() Its main disadvantage is arriving late to the scene. Research suggests that the Novavax vaccine is about as safe and effective as the mRNA shots. And Novavax has said that a special ingredient derived from the bark of Chilean soapbark trees enhances the vaccine’s power. These proteins are grown within moth cells in a laboratory, while other protein-based shots use cells from mammals. Whereas mRNA vaccines direct the body to produce spike proteins from the coronavirus SARS-CoV-2, which then train a person’s immune system to recognize and fight the virus, Novavax simply injects the proteins. Such studies have driven people with long Covid and chronic fatigue syndrome (also known as myalgic encephalomyelitis, or ME/CFS) to seek out Novavax, too, since the FDA and the Centers for Disease Control and Prevention greenlighted Novavax’s vaccine - updated to protect against recent omicron coronavirus variants - about three weeks after recommending updated mRNA vaccines in September. That finding was corroborated in an analysis of international data published last year. And those boosted with Novavax’s had fewer complaints than either of those. Data from the United Kingdom found that people more frequently reported temporary reactions - like low fevers, fatigue, and pain - as their immune system ramped up in the days following booster vaccination with Moderna’s mRNA vaccine versus the one by Pfizer. ![]() Nonetheless, when the pain subsided, she pored through studies on Novavax’s shot, a vaccine that is based on proteins rather than mRNA and has been used since early 2022 in other countries.
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