FDA to Require 50 Percent Efficacy for COVID-19 Vaccines

Vaccine experts divided on whether that level of protection is too low or too demanding.

amanda heidt
| 2 min read
covid-19, pandemic, SARS-CoV-2, coronavirus, vaccine, fauci, FDA, medicine, vaccine development

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The US Food and Drug Administration has released a set of guidelines outlining the approval process for future COVID-19 vaccines, stating that any product will need to prevent or decrease the severity of the disease by at least 50 percent.

The new guidelines were released during a June 30 briefing with the Senate Health, Education, Labor and Pensions Committee during which senators sought assurances from FDA Commissioner Stephen Hahn, National Institute of Allergy and Infectious Diseases Director Anthony Fauci, and other high-ranking health officials that the expedited speed of development wouldn’t compromise the integrity of the final product.

“I want the American people to hear me when I say we will use the science and data from those trials, and will ensure that our high levels of standards for safety and efficacy are met,” Hahn said during the briefing.

Currently, more than 145 vaccines are being ...

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Meet the Author

  • amanda heidt

    Amanda Heidt

    Amanda was an associate editor at The Scientist, where she oversaw the Scientist to Watch, Foundations, and Short Lit columns. When not editing, she produced original reporting for the magazine and website. Amanda has a master's in marine science from Moss Landing Marine Laboratories and a master's in science communication from UC Santa Cruz.
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