Germany’s coronavirus reproduction rate jumped to 288 on Sunday, up from 179 a day earlier, health authorities said, a rate showing infections are rising above the level needed to contain the disease over the longer term.

The rise brings with it the possibility of renewed restrictions on activity in Europe’s largest economy – a blow to a country that so far had widely been seen as successful in curbing the coronavirus spread and keeping the death toll relatively low.

To keep the pandemic under control, Germany needs the reproduction rate to drop below one.

The rate of 2.88, published by the Robert Koch Institute (RKI) for public health, means that out of 100 people who contract the virus, a further 288 people will get infected.

Chancellor Angela Merkel had favoured maintaining lockdown measures for longer but gradually eased restrictions in recent weeks following pressure from regional politicians to reboot the economy.

Already, the country is grappling to get people to adhere to isolation rules in places where they have been imposed. Over the weekend, authorities in Goettingen needed riot police to enforce quarantine measures.

In North-Rhine Westphalia, more than 1 300 people working at a slaugterhouse in Guetersloh tested positive for coronavirus, up from 803 infections on Friday.

As a result, North-Rhine Westphalia has put 7000 people under quarantine and closed kindergartens and schools close to the abbatoir.

“I cannot rule out a broader lockdown,” North-Rhine Westphalia’s premier Armin Laschet told German television ZDF on Sunday.

Outbreaks in recent weeks have occurred in nursing homes, hospitals, institutions for asylum seekers and refugees, in meat processing plants and logistics companies, among seasonal harvest workers and in connection with religious events, RKI said.

The 288 rate is a jump from 106 on Friday, based on RKI’s moving four-day average data, which reflects infection rates one to two weeks ago.

Based on a 7-day average, infection rates have risen to 2.03, RKI said, adding that an accurate reading for long-term patterns will take a couple of days.

The spike in infections is mainly related to local outbreaks including in North Rhine-Westphalia, RKI said. North-Rhine Westphalia was one of the regions most vocal about urging Merkel to ease lockdown restrictions.

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