COVID-19 Vaccine Should Demonstrate At Least 50% Effectiveness, US FDA Says
Guidance on COVID-19 vaccine development and licensure appears to set a precedent in specifying the clinical efficacy rate for a product approval; agency also takes accelerated approval off the table for now and says emergency use authorization may be granted only after safety and efficacy have been demonstrated.
You may also be interested in...
Instead of the 50% threshold, the FDA in updated guidance says that efficacy confidence intervals and point estimates should be ‘appropriately justified.’
Peter Marks says agency will proceed to meeting once Pfizer and/or Moderna complete their submissions and that the two may be considered at the same VRBPAC panel. FDA's effectiveness standard has not changed, CBER director says, but acknowledges that vaccines might be a little less effective than 50% in subpopulations.
Application could be first major test of FDA’s comfort in authorizing a product with vaccine efficacy estimated to be at or below 50%. ‘Final components’ of the request to be submitted in the coming week. In interview, Moderna CMO Burton says results are ‘really strong.’