Intestinal parasitic infections of urban and rural children on Pemba Island: implications for control

Area of Science:

• Public Health
• Infectious Diseases
• Parasitology

Background:

• Intestinal parasitic infections are a major global health concern, particularly in tropical and subtropical regions.
• School-aged children are a vulnerable population susceptible to high parasite burdens, impacting their health and development.
• Pemba Island, Zanzibar, faces challenges with endemic parasitic diseases, necessitating local control initiatives.

Purpose of the Study:

• To survey the prevalence and intensity of intestinal parasites among schoolchildren in rural and urban areas of Pemba Island.
• To inform the planning and implementation of targeted helminth control strategies within the local program.
• To assess differences in parasitic infections between urban and rural settings.

Main Methods:

• Stool samples were collected from schoolchildren in designated rural and urban study areas.
• Quantitative (Kato-Katz) and concentration (formalin-ether) techniques were employed for parasite detection.
• Analysis focused on identifying helminth eggs and protozoa, assessing prevalence and intensity.

Main Results:

• Intestinal helminthiases were found to be a significant public health problem across both study areas.
• All surveyed schoolchildren were infected with helminths, with over 97% infected with multiple species.
• Hookworms and Trichuris species were the most prevalent and intense infections, posing a substantial challenge.

Conclusions:

• The high prevalence and intensity of helminth infections underscore the urgent need for robust control measures.
• No significant differences in infection rates were observed between urban and rural schoolchildren, suggesting island-wide interventions.
• Findings provide crucial data for effective planning and execution of the Helminth Control Programme on Pemba Island.