Who was invited to take the antibody test?

We invited those who took part in at least one of our three recent COVID-19 surveys to take an antibody test.

Other research studies in the UK also asked their participants to complete the same antibody test. Analysing the information from the 1970 British Cohort Study, alongside these other studies, will give us a better understanding of how many people may have been infected with COVID-19 and why some people develop severe disease.