Caspofungin has in vitro activity against Aspergillus species (Aspergillus fumigatus [N = 75], Aspergillus flavus [N = 111], Aspergillus niger [N = 31], Aspergillus nidulans [N = 8], Aspergillus terreus [N = 52], and Aspergillus candidus [N = 3]).