Can we identify at-risk groups in relation to their activities and environments? 4. How do we prepare for the anticipated challenges of environmental change and new and emerging diseases? and 5. How can we control for and prevent pathogens in outdoor environments? Participants were selected on the basis of their involvement, for example, as president or executive committee members of related professional and academic bodies such as the British Aerobiology Federation, the Aerosol Society and the International Association of Aerobiology; their work in related UK organisations, such as the Health Protection Agency (HPA), hospitals and Defence Science and Technology Laboratory (DSTL); or their research in relevant fields such as epidemiology, meteorology, geoinformatics, and natural resource management. Researchers outside the UK were invited to give an international dimension and network of collaboration to the UK participants. Rather than focus on a narrow topic, the aim of the AirPath working group is to explore the complex and multidisciplinary facets of research connected with the outdoor environment and human pathogens in air, analyse their potential implications, and investigate applications of this research for the well being of society.