The R-number, also known as reproduction rate, of Covid-19 in Denmark is currently 0.7, according to updated figures released on Tuesday.
That puts the current spread of the coronavirus in the country at its lowest level since June, the last time such a figure was recorded.
The R-number is a measure of the current state of the epidemic within a society. An R-number over 1.0 means 10 infected people will infected more than 10 others, meaning the epidemic will grow.
If the R-number is less than 1.0, the epidemic is receding.
The figure is calculated using infection numbers from around 10 days ago, meaning there is an inherent lag in the measure.
It is nevertheless a key factor used by authorities in assessments of the current status of the Covid-19 pandemic in Denmark.
The beginning of September has also seen a falling trend in the number of daily cases recorded by health authorities.
The average of 932 cases per day registered in August has fallen to 625 so far in September.
On Tuesday, 451 new cases were registered from 43,694 PCR tests, giving a test positivity rate of 1.03 percent.
“It is positive that we are seeing this falling trend in infection numbers and for me it is clear evidence that the vaccines work,” Torben Mogensen, chairperson of lung disease charity Lungeforeningen, told news wire Ritzau.