Volume 80, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


To determine the distribution of sp. subtypes from cyst excreters, 1,000 fecal samples from patients suspected of enteroparasitic disease were scored for stool consistency, submitted to xenic culture (XIVC), formol ethyl acetate concentration (FECT) with subsequent isopycnic centrifugation, and polymerase chain reaction (PCR) with subtype (ST) analysis. was significantly more prevalent in specimens from patients with travel-associated diarrhea (15.6%) than those with persistent diarrhea (8.3%) ( = 0.005). Overall, 115 (11.5%) and 35 (3.5%) specimens were positive by XIVC and FECT, respectively. cysts were detected in 33 (28.7%) of the XIVC-positive specimens. A positive FECT result was associated with ST3 ( = 0.05). The presence of in general or cysts was independent of stool consistency, and no particular ST was significantly associated with cyst identification. In view of these data, the present study indicates that cyst formation is independent of sp. subtype and gastrointestinal transit time.


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  • Received : 27 Oct 2008
  • Accepted : 03 Jan 2009

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