"It really is not affordable, sustainable or probably even needed to vaccinate everyone on the planet every four to six months," Prof Sir Andrew Pollard says https://t.co/w86ido8N8d— BBC News (UK) (@BBCNews) January 4, 2022
"It really is not affordable, sustainable or probably even needed to vaccinate everyone on the planet every four to six months," Prof Sir Andrew Pollard says https://t.co/w86ido8N8d