By Stephen Beech

Peanut patch treatment helps toddlers safely build tolerance to the potentially deadly allergy, reveals new research.

More than 70% could tolerate three or four peanut kernels after a three-year course of treatment, say American scientists.

The findings offer encouraging news for parents of around one in 50 young children born with potentially deadly peanut allergies .

The long-term study found that a peanut patch treatment - called epicutaneous immunotherapy, or EPIT - continued to help toddlers safely build tolerance to peanuts over three years.

The treatment, known as the Viaskin Peanut Patch , delivers small amounts of peanut protein through the skin.

The goal is to train the immune system to tolerate peanut exposure and reduce the risk of severe allergic rea

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