A 40-year-old HIV-positive man with a CD4 count of 15 cells/µL develops chronic watery diarrhoea. Stool modified ZN stain reveals small (1-2 µm) oval ...

Question

A 40-year-old HIV-positive man with a CD4 count of 15 cells/µL develops chronic watery diarrhoea. Stool modified ZN stain reveals small (1-2 µm) oval organisms with a diagonal or equatorial band. Modified trichrome (Weber) stain is positive. What is the most likely pathogen?

Accepted Answer

Microsporidium (Enterocytozoon bieneusi)

Answer

Cryptosporidium parvum

Answer

Cyclospora cayetanensis

Answer

Cystoisospora belli

Answer

Giardia lamblia

uk-dtmh MCQ (SBA): Microsporidiosis in HIV

A 40-year-old HIV-positive man with a CD4 count of 15 cells/µL develops chronic watery diarrhoea. Stool modified ZN stain reveals small (1-2 µm) oval organisms with a diagonal or equatorial band. Modified trichrome (Weber) stain is positive. What is the most likely pathogen?