This is big news - in England, an estimated *68.3%* of the adult population (95% credible interval: 63.9% to 73.0%) would have tested positive for antibodies on a blood test in the week ending 11 April, suggesting they had the infection in the past or have been vaccinated. https://t.co/HLSfYvZc4z

— Covid Fact Check UK (@fact_covid) April 28, 2021