B J Ferguson, L Barnes, J M Bernstein, D Brown, C E Clark, P R Cook, W S DeWitt, S M Graham, B Gordon, A R Javer, J H Krouse, F A Kuhn, H L Levine, S C Manning, B F Marple, A H Morgan, J D Osguthorpe, D Skedros, B M Rains, H H Ramadan, J E Terrell, A J Yonkers

Allergic fungal rhinosinusitis (AFRS) has a worldwide distribution. This survey of 20 otolaryngologic practices throughout the United States confirmed a variation in the frequency of AFRS relative to endoscopic sinus procedures performed for all other diagnoses. The highest incidence occurred in Memphis, Tennessee at 23%, with three other southern practices reporting a frequency of at least 10%. In the northern locations the frequency ranged from 0 to 4%. No correlation with mould counts was demonstrated, possibly because of incomplete mould data relative to most of the surgical locations.