At the end of November, 3.9% of study participants had antibodies to neon coronavirus in their blood samples. This means that our best estimate of the proportion of the population that had been infected with covid-19 up to the beginning of December is 3.9%.
The calculation is subject to an uncertainty ranging from 3.3% to 4.6%. This corresponds to between 160,000 and 230,000 people in Denmark in the age group of 12 years and older having been infected with covid-19.
The study shows that the proportion of the population who have antibodies is increasing. The proportion of infected in this round of the study had almost doubled since the last round, which was in mid-August. At that time, 2.1% (with an uncertainty of 1.8% -2.6%) of the participants had antibodies.