Abstract
M and Cryptosporidium parvum are important agents of enteritis, capable of causing severe chronic disease in immunocompromised individuals.1,2 Currently, detection of these organisms in stool specimens requires at least 2 special stains or procedures; a chemofluorescent agent or a modified trichrome stain is commonly used to detect microsporidia,3–5 and an acid-fast stain, direct immunofluorescent assay (DFA), or enzyme immunoassay is used to detect C parvum.6–8 Recently, Ignatius et al9 described a combination acid-fast–trichrome (AFT) stain, which allows detection of these organisms, as well as Cyclospora cayetanensis and Isospora belli, with a single procedure. We modified this AFT procedure, incorporating the use of commercially available reagents, and compared the results of the modified AFT stain with those of our standard procedures for stool specimens received in the laboratory for a 15-month period.
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