Pfizer CEO Albert Bourla told CNBC he expects life could return to normal for developed countries by the end of this year and the rest of the world by the end of 2022.

By the end of next year, there should be enough Covid-19 vaccine doses for most world leaders to successfully inoculate their populations against the virus, Bourla said during an interview with Andrew Ross Sorkin at the CNBC Evolve Global Summit.

“I think the whole world will have enough volumes [of vaccine doses] by the end of 2022 to vaccinate, to protect everyone. And I think that by the end of this year, the developed world will already be in this situation”, - he said.