Definition of "Pfizer"

For the record, Stone has been quadruple-vaxxed against covid-19: “Two Sputniks and two Pfizers,” he says proudly.

2021 December 22, Ann Hornaday, “‘JFK’ at 30: Oliver Stone and the lasting impact of America’s most dangerous movie”, in The Washington Post‎

I will make only one comment: I have two Pfizers and a booster and a flu shot. That’s all I’m going to say.

2022 January 22, David Marchese, “Temple Grandin Wants Us to Think Differently About Kids Who Think Differently”, in The New York Times Magazine‎