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Some say that if we're going to live with #Covid19 but reduce the chances of continued lockdowns, mass testing is critical. But how straightforward is it?

Increased coronavirus testing in areas of the UK with higher numbers of cases has led to shortages elsewhere.

But public health experts say this strategy could mean that big rises in numbers in other places are missed.

Testing people and then tracing the contacts of those who are infected - is considered vital to stop coronavirus from spreading.

Deb Cohen reports and in the studio Kirsty Wark is joined by by former Health Secretary Stephen Dorrell.