The Food and Drug Administration would authorize a coronavirus vaccine so long as it is safe and at least 50% effective, the agency’s commissioner, Dr. Stephen Hahn, said Thursday.
“We all want a vaccine tomorrow. That’s unrealistic. And we all want a vaccine that’s 100% effective. Again, unrealistic,” Hahn said in an interview with Dr. Howard Bauchner of the Journal of the American Medical Association. “But we said 50%, and the reason was because we felt that that was a reasonable floor given the pandemic.”
