“…Moreover, light microscope does not work when the stool contains undetectable levels of spores; this is consistent with Gumbo et al 48 In Zimbabwe, microsporidia was detected in 18%, 51% of diarrhea patients by microscopic and PCR, respectively. These findings were supported by others who reported PCR is more sensitive(100%) compared to microscopic techniques in detecting microsporidial infection in HIV + patients 34,49,50 .The increased sensitivity of PCR can be attributed to lower threshold of microsporidia (10 2 spores/g stool) compared to optical microscopy in which the cut-off point ranges from 10 4 to 10 6 spores 51 . Althoughtrichrome staining is are liable and an available technique for detection of microsporidian spores in vitro, detection process is difficult and time-consuming for staining 46,52 .Moreover, higher prevalence of E. bieneusi compared to E. intestinalis has been reported in some studies 29,36,53 .…”