German authorities say a 26-year-old US citizen has caused a spike in coronavirus infections in the town of Garmisch-Partenkirchen.
The unnamed woman had recently returned from a holiday abroad, according to Stephan Scharf, press officer of the District Administrator's Office in the southern German town.
Scharf told CNN he did not know which country she had returned from, but it had not been from the US.
The woman developed Covid-19 symptoms, took a coronavirus test and was told to stay at home to wait for the results, said Scharf, but this did not stop her from going out and socializing.
She has since received a positive test result and is in quarantine, said Scharf.
"We don’t know how many people the assumed spreader infected, although we know she was out being infectious,” Scharf said.
On Friday there were 33 new cases in Garmisch-Partenkirchen.
"We did not have so many even during the height of Corona,” Scharf said. “This kind of behavior of course is everything but commendable."
Garmisch-Partenkirchen recorded a seven-day incidence rate of 55 cases per 100,000 inhabitants, according to the latest figures.
German authorities have agreed to reimpose measures in areas where the incidence rate rises above 50 cases per 100,000 inhabitants.
As a result new regulations came into effect in Garmisch-Partenkirchen over the weekend, meaning local pubs and bars have to close at 10 p.m. local time.
Only five people can be at a table indoors, and 10 people outdoors -- half of what it was allowed before. The number of attendees allowed for parties have also been slashed from 200 to 100, Scharf said.
The woman works at the Edelweiss Lodge, a US Armed Forces Recreation Center Resort operated by the US Army, and Scharf told CNN 24 staff members had tested positive for coronavirus.
The US Army Europe Public Affairs Department said in a statement Sunday that the resort would be closed for two weeks starting from Monday.
"As a precaution, additional staff members who had prolonged, direct contact with the positive staff members have also been quarantined. The facility is working with U.S. Army medical professionals and local medical officials to assess the situation and conduct contact tracing," the statement said.