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Year : 2013  |  Volume : 5  |  Issue : 12  |  Page : 707-712

Intestinal protozoans in adults with diarrhea

Department of Microbiology, Maharaja Krushna Chandra Gajapati Medical College and Hospital, Berhampur University, Odisha, India

Correspondence Address:
Muktikesh Dash
Department of Microbiology, Maharaja Krushna Chandra Gajapati Medical College and Hospital, Berhampur, Odisha - 760 004
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1947-2714.123261

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Background: Diarrhea is one of the most common presenting complaints in human immunodeficiency virus-infected individuals. Aims: The study was designed to determine the magnitude of opportunistic and nonopportunistic intestinal parasitic infections among diarrheal patients and association between CD4 + T-cell counts and human immunodeficiency virus (HIV)-infected intestinal parasites. Materials and Methods: A cross-sectional study was conducted among 207 enrolled diarrheal patients attending HIV integrated counseling and testing center from January 2012 to December 2012. Stool samples were subjected to special modified Ziehl-Neelsen and chromotrope staining method for detection of opportunistic protozoans. Blood samples were also collected from all study subjects for HIV testing and CD4 + T-cell counts were estimated by only in HIV-infected patients. Results: Intestinal parasitic pathogens were detected in 46.1% HIV-infected patients and the major pathogens were opportunistic protozoans 32.2% (37/115), most common being Isospora belli 16.5% (19/115) followed by Cryptosporidium parvum 12.2% (14/115). In HIV noninfected diarrheal patients, major pathogens detected were Entamoeba histolytica/Entamoeba dispar 8.7% (8/92) and Ascaris lumbricoides 3.3% (3/92). Conclusions: The opportunistic intestinal protozoans especially I. belli and C. parvum were most commonly isolated in HIV-infected patients with diarrhea. Majority of the infections occurred in patients when a CD4 + T-cell counts were less than 200 cells/μl.

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