Sen. Ron Johnson: 5 Questions for FDA About Pfizer Vaccine ApprovalSen. Ron Johnson (R-Wis.) on Thursday sent a letter to Dr. Janet Woodruff, acting commissioner of the U.S. Food and Drug Administration (FDA), demanding answers to five questions pertaining to the FDA’s approval of the Pfizer Comirnaty COVID vaccine. The FDA on Aug. 23 granted full approval to Pfizer’s vaccine, over the objections of some scientists who pointed out that full approval was based on only six months’ worth of data — despite clinical trials designed for two years — and that there was no public discussion of the data....