Half of Brits are now likely have antibodies to the CCP virus—from either natural immune response or from vaccination—according to official modeling based on blood samples.
For those aged over 65 in England—all of whom have been offered the vaccine—over eight out of ten people had antibodies.
For those between the ages of 16 and 65, fewer than 60 percent had antibodies, with estimates as low as around one in four for Scotland and Northern Ireland.
The data covers the week ending 14 March.
“The effect of vaccinations also shows up clearly in the figures for the percentage who would test positive for antibodies at different ages. Rates of testing positive are much the highest in the older age groups, where many people have already received at least one dose of vaccine.”
The ONS estimates do not include data from people in hospitals, care homes, or other institutional settings.
So far, half of all adults in the UK—a total of over 30 million—have received their first dose of a vaccine, with over 3 million having received their second and final jab.
Meanwhile, deaths from the pandemic have continued to drop, with overall death rates from all causes below the 5-year average.
Infection rates are also continuing to drop, both according to the government’s statistics taken from sample tests and according to the ZOE COVID survey.
While antibodies are generally strongly associated with immunity, they don’t protect against every disease. Conversely, immunity against some diseases doesn’t depend on antibodies, but instead can rely on other mechanisms, including T-cells.