Iona Stratton, aged 23 months, was given the transplant over four hours on Wednesday (November 19).

It is the last hope in her battle against leukaemia, which was diagnosed when she was just 13-weeks-old.

In a bid to find the best transplant match for their daughter, mum Anita Kan and dad Kevan Stratton, of Charles Street in Tring, launched an online plea.

It called for people to register themselves on the transplant list.

The tot's ethnic background - her mum is Chinese and dad is English - meant there was a shortage of possible donors.

However, the response to the appeal on social networking site Facebook was so great that it led to a match being found in Australia. Under transplant rules the donor must stay anonymous.

The tot is now in isolation at a hospital in Bristol where doctors are keeping a close eye on her progress.

Ms Kan said: "We have to keep any possible infections away because she is very vulnerable.

"The next 100 days are crucial. We are not out of the woods yet. We have still got a long journey to go on."

Although the family expect Iona to still be in hospital over the Christmas period, they hope the tot will be able to celebrate her second birthday at home on New Year's Day.

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