Abstract
We evaluated the incidence of Cyclospora cayetanensis in immunocompetent, diarrheic patients during the summers of 2006-2009 in Istanbul. Stools from 1876 patients were examined using microscopic techniques. Cyclospora oocysts were observed in wet preparations by light and epifluorescence microscopy and in fecal smears that were stained by Kinyoun's modified acid-fast stain. Characteristic Cyclospora oocysts were observed in 2 patients in 2006, 17 in 2007, and one in 2009. Samples positive for Cyclospora were further analyzed by a single step polymerase chain reaction (PCR) with Cyclospora-specific primers from the ITS-1 region of the genome.The majority of the Cyclospora positive cases (15) were clustered during about 15 days in June 2007, indicating an unusual incidence of cyclosporiasis in this time period. The climatic characteristics of 2007 could have played a role in this high occurrence rate.
Highlights
We evaluated the incidence of Cyclospora cayetanensis in immunocompetent, diarrheic patients during the summers of 2006-2009 in Istanbul
Cyclospora cayetanensis is primarily regarded as a cause of traveler's diarrhea, and it is not usually included in the routine laboratory algorithms for immunocompetent patients, unless there is a specific rea
We found a high occurrence of cyclosporiasis which could be related to the unusual climatic conditions that occurred during 2007
Summary
We evaluated the incidence of Cyclospora cayetanensis in immunocompetent, diarrheic patients during the summers of 2006-2009 in Istanbul. Findings Cyclospora cayetanensis is a frequently reported emerging pathogen that causes diarrhea in humans. Cyclospora cayetanensis is primarily regarded as a cause of traveler's diarrhea, and it is not usually included in the routine laboratory algorithms for immunocompetent patients, unless there is a specific rea-
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