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A health board is to divert ambulance patients to hospitals outside its area because of "critical" pressure on its largest hospital.

The research team applied this principle to the new pressure release valve: a flexible membrane mimics the opening movement of the plant trap and reacts to critical pressure increases in the speaking valve.

"This innovative pressure release valve opens automatically when critical pressure is reached, emitting a clearly audible warning signal," explains Dr Falk Tauber, co-author and project manager.

Norfolk County Council executive director of adult social services, James Bullion, says staff sickness, because of Omicron, has put the system under critical pressure for more than three weeks.

Norfolk County Council executive director of adult social services James Bullion says the Omicron variant, first identified in South Africa, has put the system under critical pressure for more than three weeks.