A senior government adviser on the safety of blood transfusions has told Sky News he is "kept awake at night" worrying about the possibility of a deadly brain disease being passed from donor to patient.

Professor James Neuberger was speaking after a Sky News investigation into the case of Natalie Bree Bennet and her brother Neil, who both became infected with the potentially deadly brain disease iatrogenic cerebral amyloid angiopathy (ICAA).

Natalie and Neil underwent childhood NHS operations involving infected tissue taken from dead bodies and transplanted into their own.

As a result, Natalie suffers from bleeding on the brain and is at high risk of a fatal stroke and developing Alzheimer's. Her brother's condition has deteriorated to the extent that he has now been forced to g

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