Pfizer Inc. (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) today announced the signing of a letter of intent with The Biovac Institute (Pty) Ltd, known as “Biovac,” a Cape Town-based, South African biopharmaceutical company, to manufacture the Pfizer-BioNTech COVID-19 Vaccine for distribution within the African Union.