What is the global prevalence of Dientamoeba fragilis infection?

Updated: Jul 31, 2018
  • Author: Maria A Garcia Fernandez, MD; Chief Editor: Russell W Steele, MD  more...
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Estimated prevalence in the general population in the United States and in other developed countries is most commonly 2-5%. However, much higher prevalence rates (19-69%) have been reported in specific populations, such as individuals living in crowded conditions (eg, institutions, communal living), individuals living in conditions with poor hygiene, and those traveling to developing countries.

A prospective study from Spain that included 44 D. fragilis patients and their 97 household contacts reported that 50.5% of household contacts had a positive PCR for D. fragilis. The study also reported that patients with children were more associated with coinfection. [4]

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