UK will have to look ‘very carefully’ at vaccine protection after first dose

More than four million people have been given the vaccine in the UK (Steve Parsons/PA)

The UK will have to look “very carefully” at the effectiveness of a single dose of the Pfizer/BioNTech coronavirus vaccine, the UK’s chief scientific adviser has said.

Patrick Vallance’s comments came after reports from Israel suggested the protection it provides may be much lower than shown in trials.