Pfizer's and Moderna's COVID-19 vaccines produce similar side effects, according to the Centers for Disease Control and Prevention. "If you look at what's going on with all the COVID-19 vaccines out there, the derailer has often been adverse events that have cropped up," he said. Philip Dormitzer, Pfizer's chief scientific officer, told the Financial Times on Wednesday that Pfizer and its codeveloper BioNTech "used the minimum dose level" to get an immune response that was stronger than catching COVID-19.ĭormitzer added that a higher dose might have risked more side effects. Scientists have speculated that this could be a reason Pfizer's shot produced a lower antibody response than Moderna's in recent studies. Pfizer's COVID-19 vaccine has 30 micrograms of mRNA, while Moderna's has 100 micrograms. Pfizer's top scientist defended the dose of the active ingredient in the company's COVID-19 vaccine, which is lower than in Moderna's vaccine. See more stories on Insider's business page. Moderna's has 100 micrograms.īoth vaccines produce similar side effects, according to the CDC. Pfizer's vaccine has 30 micrograms of mRNA, the active ingredient. Pfizer's top scientist said it chose a relatively low COVID-19 vaccine dose to minimize side effects. The actor Ian McKellen receives the Pfizer-BioNTech COVID-19 vaccine in London on December 16.
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