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Emerging and reemerging intestinal protozoa

C D Huston1, W A Petri

  • 1Departments of Medicine, University of Virginia Health Sciences Center, Charlottesville, Virginia 22908, USA. cdh9b@virginia.edu

Current Opinion in Gastroenterology
|October 13, 2006
PubMed

Insights

Intestinal protozoa infections are rising due to global travel and immunocompromised individuals. Recent outbreaks highlight risks from contaminated food supplies, necessitating updated diagnostic and treatment approaches.

Area of Science:

  • * Medical Parasitology
  • * Infectious Diseases
  • * Public Health

Background:

  • * Increased global travel and economic globalization have led to a rise in intestinal protozoa infections in developed countries.
  • * A growing population of immunocompromised individuals (e.g., due to AIDS, organ transplants) are at risk for severe infections from previously uncommon protozoa.
  • * Distinguishing pathogenic Entamoeba histolytica from nonpathogenic Entamoeba dispar is a recent advancement.

Purpose of the Study:

  • * To discuss the evolving epidemiology of intestinal protozoa.
  • * To highlight emerging and re-emerging protozoal infections.
  • * To review new diagnostic and treatment strategies for these infections.

Main Methods:

  • * Review of recent outbreaks and epidemiological trends.
  • * Discussion of clinical implications for immunocompromised patients.
  • * Analysis of advancements in protozoal diagnostics and therapeutics.

Main Results:

  • * Cyclospora cayetanensis outbreaks linked to imported produce demonstrate food supply risks.
  • * Opportunistic protozoal infections (cryptosporidiosis, isosporiasis, microsporidiosis) are increasingly significant in immunocompromised hosts.
  • * Recognition of Entamoeba dispar as distinct from Entamoeba histolytica impacts diagnosis and management.

Conclusions:

  • * The epidemiology of intestinal protozoa is rapidly changing, posing new challenges to public health.
  • * Immunocompromised populations represent a critical group for protozoal infection surveillance and care.
  • * Continued research into novel diagnostic tools and effective treatments is essential.

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