In the period from 7 February 2023 to 3 April 2023, the risk of hospital admission for people aged 60 years and older who received a repeat vaccination against COVID-19 in the autumn round was 43% lower than for people over 60 who had previously received at least one COVID-19 vaccination, but had not received a repeat vaccination in the autumn round.  Similarly, the risk of ICU admission was 36% lower. In this period, hospital admissions were highest in the age groups of 80 years and up. Since early March, a downward trend has been observed in the number of COVID-19 hospital admissions.

People who do not have the same vaccination status may also have differences in vulnerability (underlying health conditions) or the number of SARS-CoV-2 infections they have had. A comparison between the relative risk of hospital admission between people with a different vaccination status therefore cannot be exclusively used to indicate vaccine effectiveness.

Everyone who has been invited to get a COVID-19 vaccination in the basic series, but has not yet done so, can still be vaccinated. In addition, since 19 September 2022, it is possible to get a repeat vaccination against COVID-19. This repeat vaccination in the autumn round is available to everyone aged 12 years and older who has at least completed the basic series of COVID-19 vaccinations. The vaccination is available from 3 months after the most recent COVID-19 vaccination or SARS-CoV-2 infection.