Wastewater used to keep track of Scots rising Covid cases

The latest Covid figures show cases are on the up in Scotland again - to 1 in 45

But with the availability of the lateral flow tests we were all using limited, just how are the scientists coming up with those figures?

Well, when coronavirus hit a team of scientists in Scotland immediately turned to our sewers for answers.

As Covid spread they began rigorous testing of our waste water right across the country in a bid to discover more about the virus.

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