Should you pick Novavax ’s COVID-19 shot over mRNA options?

For cardiologist Eric Topol, this week’s vaccine news presented a personal dilemma. Topol, who directs the Scripps Research Translational Institute and is a popular commenter on COVID-19 research, had hoped to get an updated COVID-19 vaccine from Novavax, rather than a messenger RNA (mRNA) shot from Pfizer or Moderna. Novavax relies on an older, protein-based approach that has shown long-lasting effects against other pathogens, and Topol wondered whether it might produce more durable protection. On Tuesday, it seemed he might get his chance: a drugstore he visited for an mRNA vaccine ran out of doses, and hours later the U.S. Food and Drug Administration authorized a Novavax shot well-matched to current COVID-19 variants. The green light marks the first time Novavax will be widely available to teens and adults. “It’s hard to know how it compares” to mRNA vaccines, Topol admits; there are no head-to-head studies to rely on. In clinical trials, Novavax appeared less likely than mRNA shots to cause side effects like headache and fatigue. But how does it stack up against mRNA vaccines when it comes to protection against SARS-CoV-2? The question has been vexingly difficult to answer. Some hints are emerging, including the first large study of Novavax in the real world, published this week by a team in Italy. The results are far from definitive, but they suggest “there aren’t massive differences” between the vaccines, says Alberto Mateo Urdiales, an epidem...
Source: ScienceNOW - Category: Science Source Type: news