The reproduction rate of the virus in Germany has risen above one, causing concern days after some restrictions were eased.
The country’s “R-value” – the average number of people a patient will infect – is now 1.1, the Robert Koch Institute (RKI) for disease control said.
Coronavirus infections increase exponentially if the reproduction rate is above one.
“The increase of the reproduction number R necessitates a close monitoring of the situation in the coming days,” the RKI said in a bulletin.
On Wednesday, Chancellor Angela Merkel said Germany’s goal of slowing the spread of the coronavirus had been achieved, meaning lockdown restrictions could be gradually relaxed.
For more on the importance of the reproduction rate, read this analysis by BBC health correspondent James Gallagher.