The [url=http://www.allergy.org.au/]Australian Society of Clinical Immunologists and Allergists[/url] has some terrific information sources:

Patient Information
[ul]Prevention and Treatment of Allergy
Allergic Rhinitus (Hay Fever) and Sinusitis
Food Allergy
Allergy and the Skin
Asthma and Allergy
Immune Deficiency and Autoimmune Diseases
Severe Allergies[/ul]
Anaphylaxis e-training
Anaphylaxis First Aid Treatment
Anaphylaxis Action Plan
Action Plan and Care Plan for Eczema
Infant Feeding Advice
Guide to Common Allergenic Pollen
Anaphylaxis Resources
World Allergy Organisation