'Heartbreaking': mum's plea as allergy crisis worsens

Allergies are a major health challenge in Australia, affecting about a third of the population. (PR IMAGE PHOTO)

When the cake is cut at a friend's birthday party, nine-year-old Edward knows he won't get a slice. 

It was a similar story at daycare, where the NSW student learned to expect a bowl of muesli when his classmates were given cupcakes.