evidence: We see interesting trends for all countries. Denmark and Sweden show similar patterns at the start of the observation period, see Fig. 7a,b for Denmark and 7u,v for Sweden. As is visible in Fig. 1, the wave is going down and so are the number of infections and hospitalizations, as indicated by the positive correlations shown here. However, in Denmark about the same number of people were vaccinated in all age groups about the same number of people per week in the beginning, while in Sweden the number grew every week during the first 4 weeks of vaccinations. This is why there is a negative correlation between the vaccinations per age group and the indicators of the whole population in Fig. 7u.