Cited by 82Malaria Research and ControlMosquito-borne diseases and controlBird parasitology and diseases

The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.

Topography as a modifier of breeding habitats and concurrent vulnerability to malaria risk in the western Kenya highlands

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Abstract

BACKGROUND: Topographic parameters such as elevation, slope, aspect, and ruggedness play an important role in malaria transmission in the highland areas. They affect biological systems, such as larval habitats presence and productivity for malaria mosquitoes. This study investigated whether the distribution of local spatial malaria vectors and risk of infection with malaria parasites in the highlands is related to topography. METHODS: Four villages each measuring 9 Km2 lying between 1400-1700 m above sea level in the western Kenya highlands were categorized into a pair of broad and narrow valley shaped terrain sites. Larval, indoor resting adult malaria vectors and infection surveys were collected originating from the valley bottom and ending at the hilltop on both sides of the valley during the rainy and dry seasons. Data collected at a distance of ≤ 500 m from the main river/stream were categorized as valley bottom and those above as uphill. Larval surveys were categorized by habitat location while vectors and infections by house location. RESULTS: Overall, broad flat bottomed valleys had a significantly higher number of anopheles larvae/dip in their habitats than in narrow valleys during both the dry (1.89 versus 0.89 larvae/dip) and the rainy season (1.66 versus 0.89 larvae/dip). Similarly, vector adult densities/house in broad valley villages were higher than those within narrow valley houses during both the dry (0.64 versus 0.40) and the rainy season (0.96 versus 0.09). Asymptomatic malaria prevalence was significantly higher in participants residing within broad than those in narrow valley villages during the dry (14.55% vs. 7.48%) and rainy (17.15% vs. 1.20%) season. Malaria infections were wide spread in broad valley villages during both the dry and rainy season, whereas over 65% of infections were clustered at the valley bottom in narrow valley villages during both seasons. CONCLUSION: Despite being in the highlands, local areas within low gradient topography characterized by broad valley bottoms have stable and significantly high malaria risk unlike those with steep gradient topography, which exhibit seasonal variations. Topographic parameters could therefore be considered in identification of high-risk malaria foci to help enhance surveillance or targeted control activities in regions where they are most needed.

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Crossref · 10.1186/1756-3305-4-241

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Research works printed but not linked: 4

  1. WHO: Manual on practical entomology in malaria. Part II: Methods and Techniques. Division of Malaria and other Parasitic Diseases. 1975
  2. Lind J: Essay on the diseases incidental to Europeans in hot countries, with the method of preventing their fatal consequences. 1792, London, J. Murray, 5
  3. National Bureau of Statistics: Housing and Population Census of Kenya: Housing and population Census of Kenya. 2009, Nairobi
  4. WHO: Division of Malaria and other Parasitic Diseases; Manual on practical entomology in malaria. Part II: Methods and Techniques. 1975

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Metadata

Authors
Atieli, H. E., Zhou, G., Lee, M.-C., Kweka, E. J., Afrane, Y., Mwanzo, I., Githeko, A. K., & Yan, G.
Affiliations
  • Kenyatta University (KE)
  • University of California, Irvine (US)
  • Kenya Medical Research Institute (KE)
Corresponding author
Atieli, Harrysone E
Venue
Parasites & Vectors
Published
2011-12
Volume
4
Issue
1
Pages
241-241
ISSN
1756-3305 (ISSN-L)
OpenAlex
W2128926918
Cited by
81
References
27
Citations by year
2026: 5 · 2025: 2 · 2024: 14 · 2023: 2 · 2022: 7 · 2021: 2 · 2020: 2 · 2019: 7 · 2018: 22 · 2017: 3 · 2016: 5 · 2015: 1 · 2014: 1 · 2013: 6 · 2012: 2
FWCI
2.83
Type
journal article
Language
en
Open access
Locations
  • Parasites & Vectors (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • Kenyatta University Institutional Repository (Kenyatta University) (submittedVersion)
Funders
  • National Institutes of Health (R01A1050243)
  • U.S. Public Health Service (R01 A1050243)
  • Fogarty International Center (D43TW001505)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Malaria Research and Control
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Mosquito-borne diseases and control
  • Life Sciences › Immunology and Microbiology › Parasitology › Bird parasitology and diseases
Keywords
malaria, topography, breeding habitat, Anopheles, malaria vectors, larval habitat, valley bottoms, malaria risk, seasonal variation, western Kenya highlands, malaria surveillance
MeSH terms
Altitude, Animals, Anopheles, Humans, Insect Vectors, Kenya, Malaria, Seasons, Ecosystem

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