F.O.I. Request Pfizer's COVID-19 Vaccine Contract with Canada. October 26, 2020, page 18, it states: the "Purchaser further acknowledges that the long-term effects and efficacy of the Vaccine are not currently known...
Psaki: "Our view is that the rise in gas prices over the long term makes an even stronger case for doubling down our investment and our focus on clean energy options."