Plasmodium falciparum importation does not sustain malaria transmission in a semi-arid region of Kenya
Bibliographic Data
| ID | 19591667 |
|---|---|
| Authors | Christine F Markwalter (0000-0002-5742-8847, Duke Institute for Health Innovation, corresponding author), Diana Menya (0000-0003-3708-1871, Moi University), Amy Wesolowski (0000-0001-6320-3575, Johns Hopkins University), Daniel Esimit (0000-0001-5279-5085), Gilchrist Lokoel, Joseph Kipkoech Kirui (0000-0001-5833-7608), Joseph Kipkoech (AMPATH), Elizabeth Freedman (0000-0002-7093-535X, Duke University), Kelsey M Sumner (0000-0002-4479-897X, University of North Carolina at Chapel Hill), Lucy Abel (0000-0001-5857-1269, AMPATH), George Ambani (AMPATH), Hannah R Meredith (0000-0002-5315-7568, Duke Institute for Health Innovation), Steve M Taylor (0000-0002-2783-0990, Duke University), Andrew Obala (0000-0003-3730-5484, Moi University), Andrew A Obala, Wendy Prudhomme O’meara (0000-0001-9455-3965, Duke University) |
| Editors | Louisa Alexandra Messenger |
| Year | 2022 |
| Volume | 2 |
| Issue | 8 |
| Pages | e0000807 |
| Publication date | 2022-08-10 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | PLOS Global Public Health (JOURNAL) |
| Journal identifiers | ISSN: 2767-3375 • E-ISSN: 2767-3375 |
| Publisher | Public Library of Science (PLoS) (PUBLISHER) |
| DOI | 10.1371/journal.pgph.0000807 |
| PMID | 36962553 |
| OpenAlex | W4293152598 |
| Language | EN |
| Citations received | 5 |
| References cited | 40 |
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
Biology · Environmental health · Gene · Genotype · Genotyping · Geography · Malaria · Plasmodium falciparum · Psychological intervention · Telecommunications · Malaria Research and Control · Medicine · Mosquito-borne diseases and control · Travel-related health issues · Genetics · Immunology · Virology
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| Citations per year | 1.67 |
|---|---|
| Citation span | 2023 - 2025 (3) |
| Highly cited | No |