Australians know full well that the Delta variant loves winter.

As the weather warms up here things are looking up, but overseas it's getting colder and case numbers in Europe are rising.

Hopefully the heavy impact of winter and Delta won't be felt, thanks to high levels of vaccination in many western European countries.

But on today's Coronacast, it hasn't stopped the reimposition of some public health control measures in Denmark.

Also on today's show:

* Since the pandemic started there's been a massive ramping up of technology development relating to vaccines. If they can develop a vaccine for a new pathogen so quickly, what's next?