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A SAMPLE SURVEY OF SELECTED AREAS IN AND NEAR LITTLE ROCK, ARKANSAS, TO ASSESS THE PREVALENCE OF ENTAMOEBA
Bulletin of the World Health Organization
|January 1, 1963
Summary
Clinical amoebiasis cases can occur without high Entamoeba histolytica prevalence. Improved sanitation, like city water and sewage, significantly lowers amoebic infection rates, especially in young children.
Area of Science:
- Medical Parasitology
- Public Health
- Infectious Diseases
Background:
- Clinical amoebiasis was diagnosed in over 50 individuals in Arkansas.
- This prompted an investigation into the prevalence of Entamoeba histolytica.
Purpose of the Study:
- To investigate the prevalence of Entamoeba histolytica in Little Rock, Arkansas.
- To correlate clinical amoebiasis cases with parasite prevalence.
- To assess the impact of improved sanitation on amoebiasis rates.
Main Methods:
- Sample survey technique used to assess parasite prevalence.
- Comparison of amoebic prevalence across four selected areas.
- Analysis of age-specific prevalence rates in relation to sanitation infrastructure.
Main Results:
- A high number of clinical amoebiasis cases does not necessarily indicate high Entamoeba histolytica prevalence.
- Areas with improved sanitation (piped water, sewage) showed lower amoebic prevalence.
- A 0-4-year age-group in an area with 6-year-old sanitation improvements had a notably lower prevalence rate.
Conclusions:
- Clinical amoebiasis can be present in populations with low Entamoeba histolytica prevalence.
- Improvements in sanitary facilities, including water supply and sewage systems, are effective in reducing amoebic infections.
- Public health interventions focusing on sanitation are crucial for controlling amoebiasis.