• 1.96 million children
  • 306 research centres
  • 105 countries
  • 53 languages
  • >500 publications
  • >20 years of research

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Welcome to the ISAAC Story, a website presentation of the history and findings of the International Study of Asthma and Allergies in Childhood. The story can be explored online through the menus on this website.

This is the story of a unique global collaboration, sustained over more than twenty years through the enthusiasm of contributing research groups, the generosity of numerous funding agencies, and the goodwill of parents and children, schools, hospitals and universities around the world. We take this opportunity to thank all of them most sincerely for their invaluable contributions to ISAAC.

Few scientific studies can claim a place in the Guinness Book of World Records. ISAAC is one of them. Detailed information about the results from ISAAC and access to ISAAC datasets can be found at the ISAAC website.

The ISAAC Story is dedicated to the memory of Stephan Weiland, a founder member of the consortium, who led the development of ISAAC Phase Two until his untimely death in March 2007.