Aerobiology can be defined as the study of bioaerosols, of airborne particles of biological origin and is focussed on the transport of organisms and biologically significant materials. It concerns their sources, liberation, dispersal, deposition and impact on other living organisms. Aerobiology must therefore be considered as a multidisciplinary field which covers surprisingly broad fields of basic and applied sciences, such as allergology, bioclimatology, palynology, biological pollution, plant pathology, microbiology, indoor air quality, biological weathering, industrial aerobiology and cultural heritage. 

The IAA Quadrennial Congress is of interest to aerobiologists and related scientists and professionals working in fields such as medicine, public health, biological sciences, botany, agriculture, atmospheric physics, environmental science and cultural heritage. The main aim of the Congress is to enable inter-disciplinary communication and to provide opportunities to the delegates for discussion about the different aspects of aerobiology.