Ninety per cent of people aged 30 across the UK now have protective antibodies to Covid, official statistics show.
Younger age groups were only recently eligible for vaccination and the recent expansion of Covid vaccines to all adults means the level of antibodies, which are made by the immune system and protect against the virus, is continuously increasing.
Figures from the Office for National Statistics (ONS) published on Wednesday show that nine in 10 of all adults in the UK had antibodies as of July 4, as a result of either past infection or vaccination.
As a result of restrictions on vaccinating young people, the level of antibodies has been much lower in these groups. However, the data show that they are now beginning to catch up, and as of July 2, 90 per cent of people aged 30 in England had antibodies.
This threshold was passed for 40-year-olds on June 9, and for over-60s.
Scotland and Northern Ireland passed 90 per cent of antibodies among 30-year-olds on July 4, whereas Wales was far ahead, reaching 90 per cent coverage on June 11.
But there is a steep drop off in antibody prevalence in even younger adults, with just 59.6 per cent of 20-year-olds and 47.6 per cent of 18-year-olds in England having antibodies.
Kara Steel, a senior statistician at the ONS who runs the Covid Infection survey, said: "As we see the relaxation of restrictions, continuing to monitor how antibody and infection levels change in the coming months through our survey is crucial, so I’d like to thank everyone participating in the study for their ongoing contribution."
The data only goes up to July 4, but another bulletin published by ONS last week revealed that on July 10, 3.5 per cent of people aged 16 to 24 – one in 28 – had Covid.
The Euro 2020 final between England and Italy was on July 11 and the impact of these soaring infection rates among young people will not be seen in the antibody data for several weeks.