A 45-year-old HIV-positive man with a CD4 count of 80 cells/µL presents with chronic watery diarrhoea for 6 weeks. Modified Ziehl-Neelsen staining of ...

Question

A 45-year-old HIV-positive man with a CD4 count of 80 cells/µL presents with chronic watery diarrhoea for 6 weeks. Modified Ziehl-Neelsen staining of stool reveals small (4-6 µm) round, acid-fast oocysts. What is the most likely pathogen?

Accepted Answer

Cryptosporidium parvum

Answer

Giardia lamblia

Answer

Cyclospora cayetanensis

Answer

Isospora belli

Answer

Entamoeba histolytica

uk-dtmh MCQ (SBA): Cryptosporidiosis in HIV

A 45-year-old HIV-positive man with a CD4 count of 80 cells/µL presents with chronic watery diarrhoea for 6 weeks. Modified Ziehl-Neelsen staining of stool reveals small (4-6 µm) round, acid-fast oocysts. What is the most likely pathogen?