Germany has placed each Austrian federal state on its ‘high risk’ list due to rising infection rates, except the southern state of Carinthia.
The changes will apply as of midnight on Saturday, October 24th.
As well as Austria, Ireland, Poland and Switzerland have been designated as risk areas.
The result of the decision is that anyone who enters from a risk region faces a coronavirus test and quarantine period in Germany.
This applies to returning German citizens as well as any other arrivals from a high-risk area, i.e. including Austrian nationals and residents.
The person arriving must quarantine until the test result comes through, relying on health authorities for guidance.
Germany's threshold for placing a country on the high-risk list is 50 infections per 100,000 residents over the previous seven days.