Pfizer, Moderna's vaccine development speed didn't compromise safety: Fauci
America's top infectious disease expert Anthony Fauci on Thursday said the data of the two coronavirus vaccines being tested by Pfizer and Moderna was "solid". He added that the speed of the process didn't compromise the "safety nor did it compromise scientific integrity". Moderna said that its vaccine is 94.5% effective, while Pfizer said that its vaccine is 95% effective.