FDA Commissioner Stephen Hahn walked back his statement claiming a “35 percent improvement in survival” from plasma therapy to treat COVID-19 in a tweet last night during the RNC:
I have been criticized for remarks I made Sunday night about the benefits of convalescent plasma. The criticism is entirely justified. What I should have said better is that the data show a relative risk reduction not an absolute risk reduction.
— Dr. Stephen M. Hahn (@SteveFDA) August 25, 2020