High-resolution micro-epidemiology of parasite spatial and temporal dynamics in a high malaria transmission setting in Kenya.

Published online

Journal Article

Novel interventions that leverage the heterogeneity of parasite transmission are needed to achieve malaria elimination. To better understand spatial and temporal dynamics of transmission, we applied amplicon next-generation sequencing of two polymorphic gene regions (csp and ama1) to a cohort identified via reactive case detection in a high-transmission setting in western Kenya. From April 2013 to July 2014, we enrolled 442 symptomatic children with malaria, 442 matched controls, and all household members of both groups. Here, we evaluate genetic similarity between infected individuals using three indices: sharing of parasite haplotypes on binary and proportional scales and the L1 norm. Symptomatic children more commonly share haplotypes with their own household members. Furthermore, we observe robust temporal structuring of parasite genetic similarity and identify the unique molecular signature of an outbreak. These findings of both micro- and macro-scale organization of parasite populations might be harnessed to inform next-generation malaria control measures.

Full Text

Duke Authors

Cited Authors

  • Nelson, CS; Sumner, KM; Freedman, E; Saelens, JW; Obala, AA; Mangeni, JN; Taylor, SM; O'Meara, WP

Published Date

  • December 9, 2019

Published In

Volume / Issue

  • 10 / 1

Start / End Page

  • 5615 -

PubMed ID

  • 31819062

Pubmed Central ID

  • 31819062

Electronic International Standard Serial Number (EISSN)

  • 2041-1723

Digital Object Identifier (DOI)

  • 10.1038/s41467-019-13578-4

Language

  • eng

Conference Location

  • England