BRUSSELS: Pfizer and BionTech pledged on Friday to deliver 1 billion doses of their COVID-19 vaccine to poorer nations this year and another 1 billion next year, the boss of Pfizer said.

"Pfizer and BioNTech are pledging to provide 2 billion doses of our COVID-19 vaccines to middle- and low-income countries over the next 18 months," Albert Bourla told a global health summit.