Inside the Chesterfield, Missouri lab where Pfizer’s Covid vaccine originates Inside the Chesterfield, Missouri lab where Pfizer’s Covid vaccine originates April 5, 2021 Matt Fernandes This article originally ran on NBC Nightly News on April 1, 2021. Video: NBC News’ Stephanie Gosk was given exclusive access to Pfizer’s Missouri lab, the first stage of its Covid-19 vaccine production process. View Video April 5, 2021 Categories:News