Pfizer CEO: Covid-19 vaccines for new variants possible before year ends

Pfizer CEO Albert Bourla talks during a press conference with European Commission President Ursula von der Leyen after a visit to oversee the production of the Pfizer-BioNtech Covid-19 vaccine at the factory of US pharmaceutical company Pfizer in Puurs, Belgium, on April 23, 2021.
PHOTO: Reuters via pool