Austrian authorities have stated that vaccine certificated are only valid for one year.
Visitors to Austria must have received their full course of Covid vaccination within 360 days in order to enter the country without quarantine.
According to the Austrian Tourism website: “The vaccine certificate is valid for 360 days after the second dose for two-dose vaccines.
“In people with a past infection and one vaccination, it is valid for 360 days after that one dose.
“If you have had a third/additional/booster vaccination, it is valid for 360 days from the third jab.
“For vaccines that require only one dose, it is valid from the 22nd day for 270 days from vaccination.”