At a Downing Street press briefing, Johnson said the concept of what constitutes “full vaccination” will need to be adjusted.
“On boosters, it’s very clear that getting three jabs—getting your booster—will become an important fact and it will make life easier for you in all sorts of ways, and we will have to adjust our concept of what constitutes a full vaccination to take account of that,” he said.
“As we can see from what’s happening, the two jabs sadly do start to wane, so we’ve got to be responsible and we’ve got to reflect that fact in the way we measure what constitutes full vaccination.”
Johnson said the government will be making plans to add the booster to the digital COVID-19 passport issued by the National Health Service.
The prime minister urged people to get the booster jab as soon as they are eligible. “It would be an utter tragedy if, after everything we have been through, people who had done the right thing by getting double vaccinated ended up becoming seriously ill or even losing their lives because they allowed their immunity to wane,” he said.