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Published on: November 5, 2017
Human mobility patterns and malaria importation on Bioko Island
Carlos A Guerra1, Su Yun Kang2, Daniel T Citron3
1Medical Care Development International, 8401 Colesville Road, Suite 425, Silver Spring, MD, 20910, USA. cguerra@mcd.org.
Human movement, especially off-island travel, is linked to higher malaria risk on Bioko Island. Understanding these patterns is key to malaria elimination efforts in the region.
Area of Science:
- Epidemiology
- Mathematical Biology
- Public Health
Background:
- Malaria burden on Bioko Island has decreased over 15 years.
- Intervention impact on malaria prevalence has recently stalled.
- Human movement patterns are investigated for their link to Plasmodium falciparum prevalence.
Purpose of the Study:
- Investigate human movement patterns and their relationship to Plasmodium falciparum prevalence.
- Assess the impact of off-island travel on malaria importation and local transmission.
- Provide data for evaluating progress towards malaria elimination and resource allocation.
Main Methods:
- Utilized island-wide, annual malaria indicator survey data.
- Employed geostatistical and mathematical modeling techniques.
- Analyzed human movement patterns and their correlation with malaria infection rates.
Main Results:
- Off-island travel is more common in and around Malabo.
- Off-island travelers exhibit significantly higher odds of malaria infection.
- Malaria importation rates are substantial in Malabo, contributing to local prevalence.
- Local malaria transmission is most intense along the West Coast of Bioko Island.
Conclusions:
- Human movement, particularly off-island travel, plays a significant role in sustaining malaria prevalence in Malabo.
- Residual transmission remains a challenge, especially along the West Coast.
- Findings inform strategies for malaria elimination and resource allocation on Bioko Island.
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