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A 41-year-old woman with a history of miscarriages and 13 failed cycles of IVF treatment has given birth to a baby through a pioneering egg-screening technique.

Oliver – who did not seem to be taking the news calmly, judging by pictures released yesterday – is the first human to have been genetically screened before conception. Fertility doctors examined the eggs to be used during IVF to find the most suitable ones – a procedure they claim can double the chances of conception. Specialists say that it is a fast and accurate method of detecting changes to the 23 pairs of chromosomes within the human egg that are implicated in miscarriages and birth defects.

Doctors had said that the woman's chance of having a baby was less than 7 per cent, even without taking into account her history of failed IVF attempts. The new chromosome test showed that only two of her eight eggs were normal. After being fertilised, one was implanted into her womb and she became pregnant with Oliver. He was born in July. His parents have decided that...