Abstract
In this issue of the Journal, Kenyon et al.1 describe what appears to be a new dimorphic emmonsia species infecting patients with advanced human immunodeficiency virus (HIV) disease. This study is in agreement with the general literature,2 which indicates that advanced immunosuppression, such as by HIV infection (i.e., acquired immunodeficiency syndrome), is an important predisposing factor for the emergence of new, “less virulent” pathogens that cause human disease. There are several dimorphic fungi that are responsible for human disease, such as Coccidioides immitis, Paracoccidioides brasiliensis, Blastomyces dermatitidis, Histoplasma capsulatum, Penicillium marneffei, and Sporothrix schenckii. However, there are many more . . .
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