From February 1st you can vaccinate every 90 days. In theory at least. The recommendation of the National Vaccination Committee continues to be that the third vaccination should be given no earlier than four months after the second. From February 1st, the validity of the vaccination certificates in the Green Passport will also change. Then the vaccination certificate for the first series of vaccinations (2 vaccinations or recovery + 1 vaccination) is only valid for six months.
Vaccination certificates or other proof of vaccination remain valid for 270 days when entering Austria.