Pfizer Inc Chief Executive Albert Bourla has said that an annual Covid-19 vaccine would be preferable to more frequent booster shots in fighting the coronavirus pandemic.

In an interview with Israel's N12 News, Bourla was asked whether he sees booster shots being administered every four to five months on a regular basis. "This will not be a good scenario. What I'm hoping [is] that we will have a vaccine that you will have to do once a year," Bourla said.

Bourla has said Pfizer could be ready to file for approval for a redesigned vaccine to fight Omicron, and mass produce it, as soon as March.