Austria has made booster jabs a condition of quarantine-free entry for adults arriving from the UK from Christmas Day.
They must also provide a negative PCR test.
The country has also tightened its entry requirements for arrivals from the Netherlands, Norway and Denmark, as well as from the UK, due to fears of rising coronavirus cases in all four countries.
They have all been labelled ‘virus variant areas’ by Austria, which means arrivals must quarantine for up to 10 days, but ministers said they’d made an exemption for those who are boosted to make tourism ‘a little bit easier’.
Currently, Austria requires UK arrivals to be double-vaccinated or have proof of recent recovery from COVID-19 and they must also provide a COVID test if not boosted.
The new rules mean that, from 25 December, arrivals must be boosted and provide a negative test.
The new testing regime won’t apply to children, but Austria hasn’t yet clarified if teenagers will be required to have a booster.
Under existing rules, children under 12 are exempt from testing and those aged 12 to 18 can apply for a ‘Holiday Ninja Pass’ to enter venues, but must take regular tests.
Austria will also introduce an 11pm curfew for bars from 27 December, down from 11pm.
The Foreign Office has yet to update its travel advice for Austria with details of the new entry rules.