PCR samples being tested. | Leonhard Foeger

Nearly 50,000 new coronavirus cases were confirmed in the UK on Monday and there are fears that it's the start of yet another serious wave. 

The vaccination programme got off to a brilliant start in Britain, but it has plummeted since then and infections have now soared to their highest level in three months.

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Experts say vaccinating teenagers and pressing on with the booster jab programme is crucial in order to stem infections.