[_ph_]

The vaccines have full approval here in the EU. Thats why we got the vaccines 2 months later than the US. It is also not clear, how long the vaccines protect. Some part of the immune response is considered to be quite long-term, only the antibody-count falls quicker. The thing is: we lack precise data here and we have an ongoing pandemic. Once the pandemic is over, it is much safer to explore how long we can set the interval for booster shots.