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Related Experiment Video

Updated: Jun 14, 2026

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children

Published on: August 22, 2012

Applied field research for comprehensive helminth infection control.

Peter T Soboslay¹, Richard G Gantin, Méba Banla

¹Institute for Tropical Medicine, University Clinics of Tübingen, Tübingen, Germany. peter.soboslay@uni-tuebingen.de

Wiener Klinische Wochenschrift

|April 9, 2010

Summary

The Onchocerciasis Reference Laboratory in Togo has reduced onchocerciasis prevalence using ivermectin. However, co-infections with other parasites require sustained, multi-interventions for balanced immunity.

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Area of Science:

Tropical medicine
Infectious diseases
Parasitology

Background:

The University of Tübingen's Institute for Tropical Medicine established a Research Centre and Onchocerciasis Reference Laboratory (ORL) in Togo 30 years ago.
Activities focused on Onchocerca volvulus and other neglected tropical diseases, in collaboration with Togolese health institutions.

Purpose of the Study:

To assess the long-term impact of ivermectin treatment on onchocerciasis.
To investigate the prevalence and impact of co-infections with intestinal and intravascular parasites.
To understand the cellular immune responses to parasite co-infections.

Main Methods:

Longitudinal monitoring of onchocerciasis prevalence and manifestations over 24 years.
Implementation of repeated annual ivermectin treatments.
Application of albendazole and praziquantel for intestinal parasite and Schistosoma spp. infections.
Analysis of cellular immune responses in co-infected individuals.

Main Results:

24 years of ivermectin treatment significantly reduced onchocerciasis prevalence and its ocular/dermal manifestations.
High prevalence of concurrent intestinal and intravascular protozoan/helminth parasite infections identified in rural populations, especially school children.
Repeated deworming treatments reduced infection intensities by over 80%.
Parasite co-infections induce pro-inflammatory immune responses.

Conclusions:

Ivermectin is effective in controlling onchocerciasis but does not address concurrent parasitic infections.
Eliminating co-infections and establishing balanced immunity requires sustained, multi-faceted interventions.
Further research is needed on the complex immune dynamics of co-infections in endemic regions.