Pfizer CEO unsure on need for fourth dose of COVID-19 vaccine

Pfizer Inc Chief Executive Albert Bourla on Monday said a redesigned COVID-19 vaccine that specifically targets the Omicron coronavirus variant is likely needed and his company could have one ready to launch by March. Bourla said Pfizer and partner BioNTech SE are working on both an Omicron-targeted vaccine version as well as a shot that would include both the previous vaccine as well as one targeted at the fast-spreading variant. 'I think it is the most likely scenario,' Bourla said, speaking at J.P. Morgan's annual healthcare conference, which is being held virtually this year. 'We're working on higher doses. We're working different schedules. We're doing a lot of things right now, as we speak.'