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I see what you're reading, however it doesn't give any info on if that 1 vaccine, 2, how many weeks etc.
skinny-
You might find more info on that in these links:-
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Our methodology article provides further information around the survey design, how we process data, and how data are analysed. The study protocol specifies the research for the study.
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Greenbank
Sure, I'll look for the docs that came with the ONS study that we're in as we now get antibody testing as part of that. (Can't get to where the paperwork is at the moment, Mrs GB is on a conf call.)
A quick google gives:-
https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/bulletins/coronaviruscovid19infectionsurveyantibodyandvaccinationdatafortheuk/latest
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In England, it is estimated that over 8 in 10 adults, or 86.6% of the adult population (95% credible interval: 84.6% to 88.5%) would have tested positive for antibodies against coronavirus – SARS-CoV-2 – on a blood test in the week beginning 7 June 2021, suggesting they had the infection in the past or have been vaccinated.
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Antibodies
We measure the presence of antibodies in the community population to understand who has had the coronavirus (COVID-19) in the past, and the impact of vaccinations. It takes between two and three weeks after infection or vaccination for the body to make enough antibodies to fight the infection. Having antibodies can help to prevent individuals from getting the same infection again. Once infected or vaccinated, antibodies remain in the blood at low levels and can decline over time. The length of time antibodies remain at detectable levels in the blood is not fully known.
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It is important to draw the distinction between testing positive for antibodies and having immunity. Following infection or vaccination, antibody levels can vary and sometimes increase but are still below the level identified as "positive" in our test, and other tests. This does not mean that a person has no protection against COVID-19, as an immune response does not rely on the presence of antibodies alone.
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