Professor Martin Marshall, head of the Royal College of GPs, says the vaccination situation in the UK is "concerning" as immunity from last winter's vaccoine rollout wanes.
"We know that immunity is waning. Six months after you receive the second vaccination we know that immunity is - in some cases - considerably less, it will be different for different people," he told BBC Radio 4's World at One.
Out of the eight million people eligible to get the booster dose at the moment, 3.8 million people have received the jab.
In light of this, he says "the booster vaccination is incredibly important in order to protect individual patients” and “to protect the NHS during a winter that we expect to be really difficult, not just with Covid but with flu and other infections as well".
Prof Marshall says GP surgeries should not go back to administering the bulk of vaccinations as they "simply don't have the capacity to do that”.
However, he adds, "there needs to be much stronger messaging from the centre about the importance of the booster vaccination, and much clearer messaging about where to get it and how to get it"
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