There are research groups working on aspergillosis all over the world, but one of the largest groups is sited at the National Aspergillosis Centre in Manchester, UK and their access to a large group of patients is leading to elucidation of the genetics of susceptibility.
All studies https://clinicaltrials.gov/ct2/results?cond=aspergillosis&term=&cntry=&state=&city=&dist=