ArticlePLOS global public health2022
Plasmodium falciparum importation does not sustain malaria transmission in a semi-arid region of Kenya.
Article in PLOS global public health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 27 citations in OpenAlex.
- Estimating probabilities of malaria importation in southern Mozambique through modellingeLife · 2026Article
- High-AltitudeOpen forum infectious diseases · 2026Article
- An investigation of malaria vector populations in Turkana, Kenya to understand the potential impact of insecticide-treated nets.npj entomology · 2026Article
- Measuring changes ineLife · 2025Article
- What is the potential impact of insecticide treated nets in a semi-arid region of northern Kenya? An investigation of vector populations prior to ITN roll-out in Turkana, Kenya.Research square · 2025Article
- Regular Plasmodium falciparum importation onto Bioko Island, Equatorial Guinea, hampers malaria elimination from the island.PLOS global public health · 2025Article
- Detecting imported malaria infections in endemic settings using molecular surveillance: current state and challenges.Frontiers in epidemiology · 2025Review
- bistro: An R package for vector bloodmeal identification by short tandem repeat overlap.Methods in ecology and evolution · 2024Article
- Using a mobile nanopore sequencing lab for end-to-end genomic surveillance of Plasmodium falciparum: A feasibility study.PLOS global public health · 2024Article
- Characterizing mobility patterns and malaria risk factors in semi-nomadic populations of Northern Kenya.PLOS global public health · 2024Article
- Analytic optimization of Plasmodium falciparum marker gene haplotype recovery from amplicon deep sequencing of complex mixtures.PLOS global public health · 2024Article
- Understanding the fine-scale heterogeneity and spatial drivers of malaria transmission in Kenya using model-based geostatistical methods.PLOS global public health · 2023Article
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Authors and funding
14 authors at 6 institutions in 2 countries.
Funding
Abstract
Human movement impacts the spread and transmission of infectious diseases. Recently, a large reservoir of Plasmodium falciparum malaria was identified in a semi-arid region of northwestern Kenya historically considered unsuitable for malaria transmission. Understanding the sources and patterns of transmission attributable to human movement would aid in designing and targeting interventions to decrease the unexpectedly high malaria burden in the region. Toward this goal, polymorphic parasite genes (ama1, csp) in residents and passengers traveling to Central Turkana were genotyped by amplicon deep sequencing. Genotyping and epidemiological data were combined to assess parasite importation. The contribution of travel to malaria transmission was estimated by modelling case reproductive numbers inclusive and exclusive of travelers. P. falciparum was detected in 6.7% (127/1891) of inbound passengers, including new haplotypes which were later detected in locally-transmitted infections. Case reproductive numbers approximated 1 and did not change when travelers were removed from transmission networks, suggesting that transmission is not fueled by travel to the region but locally endemic. Thus, malaria is not only prevalent in Central Turkana but also sustained by local transmission. As such, interrupting importation is unlikely to be an effective malaria control strategy on its own, but targeting interventions locally has the potential to drive down transmission.
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Registered trials
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