predisposing factors for aspergillus sinusitis during the 60 days prior to infection diagnosis were granulocyte count less than 500 microliter ( mean duration , 42 days versus 14 days for sinusitis of other etiology ; p less than 0.001 ) , prolonged hospitalization ( mean duration , 22 days versus 14 days for patients with nonfungal sinusitis ; p less than 0.001 ) , and prolonged antibiotic therapy ( mean duration , 22 days versus 9 days ; p less than 0.001 ) .
C0009450
infection
C0037199
sinusitis