The Australian Government, through its agency the Australian Institute of Health and Welfare, has released a report on allergic rhinitis ('hay fever') in Australia.
The report covers matters such as the causes of allergic rhinitis, its prevalence within the Australian community and management of the problem. Various causes are discussed, including sensitivity to pollen. In this regard, the report notes that "the tiny, hardly visible pollens of wind-pollinated plants are the predominant triggers." The report also states that "pollens of insect-pollinated plants (such as Australian wattles) are too heavy to remain airborne and pose little risk".
The report can be downloaded in full from the Australian Institute of Health and Welfare's website.