By Tara John
CNN
November 18, 2021
(CNN)You may need up to three Covid-19 vaccine doses to be considered fully vaccinated.
Waning vaccine immunity and rising infections due to the Delta variant has prompted wealthy nations to reconsider the definition of “fully vaccinated” — which usually means two Covid-19 jabs.
UK Prime Minister Boris Johnson admitted as much on Monday, saying boosters were vital to prevent pandemic restrictions from being reintroduced. “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,” he told a press conference.