Mapping the Distribution of Loa loa in Africa
Author Information
Author(s): Zouré Honorat Gustave Marie, Wanji Samuel, Noma Mounkaïla, Amazigo Uche Veronica, Diggle Peter J., Tekle Afework Hailemariam, Remme Jan H. F.
Primary Institution: African Programme for Onchocerciasis Control, World Health Organization, Ouagadougou, Burkina Faso
Hypothesis
What is the geographic distribution of Loa loa in Africa?
Conclusion
The study provides the first global map of loiasis based on actual survey data, revealing high-risk areas and previously unknown hyperendemic foci.
Supporting Evidence
- The surveys showed high risk levels of loiasis in 10 countries.
- An estimated 14.4 million people live in high risk areas.
- The study detected several previously unknown hyperendemic foci.
- The contour map provides critical information for ivermectin treatment programs.
Takeaway
Researchers asked people in many villages about eye worms to find out where a disease called loiasis is common in Africa.
Methodology
The study used the Rapid Assessment Procedure for Loiasis (RAPLOA) to survey 4798 villages across 11 African countries.
Potential Biases
Potential biases may arise from self-reported data on eye worm history.
Limitations
Some areas were excluded from the surveys due to known low endemicity or security issues.
Participant Demographics
Adults aged 15 years and older from various villages in 11 African countries.
Digital Object Identifier (DOI)
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