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Hellen Koka
Observed names:
H. Koka,
Helen Koka
Institution:
Kenya Medical Research Institute
Observed institutions:
Jomo Kenyatta University of Agriculture and Technology,
United States Army Medical Research Directorate - Africa,
Kenya Medical Research Institute,
United States Army
ORCID:
0000-0002-3884-2620
Observed ORCID:
0000-0002-3884-2620
OpenAlex ID:
A5025157839
Rift Valley Fever Virus Epidemic in Kenya, 2006/2007: The Entomologic Investigations
2010
·
Rosemary Sang
, Hanafi Hanafi
, et al.
·
American Journal of Tropical Medicine and Hygiene
·
216
The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance
2022
·
Houriiyah Tegally
, James E. San
, et al.
·
Science
·
190
PDF
Mosquito-borne arbovirus surveillance at selected sites in diverse ecological zones of Kenya; 2007 – 2012
2013
·
Caroline Ochieng
, Joel Lutomiah
, et al.
·
Virology Journal
·
116
PDF
Dengue Outbreak in Mombasa City, Kenya, 2013–2014: Entomologic Investigations
2016
·
Joel Lutomiah
, Roberto Barrera
, et al.
·
PLoS neglected tropical diseases
·
108
PDF
Detection of dengue virus serotypes 1, 2 and 3 in selected regions of Kenya: 2011–2014
2016
·
Limbaso Konongoi
, Victor Ofula
, et al.
·
Virology Journal
·
89
PDF
Global Outbreaks and Origins of a Chikungunya Virus Variant Carrying Mutations Which May Increase Fitness for Aedes aegypti: Revelations from the 2016 Mandera, Kenya Outbreak
2019
·
Irina Maljkovic Berry
, Fredrick Eyase
, et al.
·
American Journal of Tropical Medicine and Hygiene
·
64
PDF
Human and entomologic investigations of chikungunya outbreak in Mandera, Northeastern Kenya, 2016
2018
·
Samson Limbaso Konongoi
, Albert Nyunja
, et al.
·
PLoS ONE
·
50
PDF
Effects of Irrigation and Rainfall on the Population Dynamics of Rift Valley Fever and Other Arbovirus Mosquito Vectors in the Epidemic-Prone Tana River County, Kenya
2016
·
R. Sang
, J. Lutomiah
, et al.
·
Journal of Medical Entomology
·
39
Ticks and Tick-Borne Viruses From Livestock Hosts in Arid and Semiarid Regions of the Eastern and Northeastern Parts of Kenya
2014
·
Joel Lutomiah
, Lillian Musila
, et al.
·
Journal of Medical Entomology
·
39
Ability of Selected Kenyan Mosquito (Diptera: Culicidae) Species to Transmit West Nile Virus Under Laboratory Conditions
2011
·
Joel L. Lutomiah
, Hellen Koka
, et al.
·
Journal of Medical Entomology
·
34
PDF
Coxiella burnetiiDetected in Tick Samples from Pastoral Communities in Kenya
2018
·
Hellen Koka
, Rosemary Sang
, et al.
·
BioMed Research International
·
31
PDF
The Detection of Spotted Fever Group Rickettsia DNA in Tick Samples From Pastoral Communities in Kenya
2017
·
Hellen Koka
, Rosemary Sang
, et al.
·
Journal of Medical Entomology
·
29
PDF
Emergence of a novel chikungunya virus strain bearing the E1:V80A substitution, out of the Mombasa, Kenya 2017-2018 outbreak
2020
·
Fredrick Eyase
, Solomon Langat
, et al.
·
PLoS ONE
·
22
PDF
Probable contribution of Culex quinquefasciatus mosquitoes to the circulation of chikungunya virus during an outbreak in Mombasa County, Kenya, 2017–2018
2021
·
Joel Lutomiah
, Francis Mulwa
, et al.
·
Parasites & Vectors
·
16
PDF
Detection and prevalence of a novel Bandavirus related to Guertu virus in Amblyomma gemma ticks and human populations in Isiolo County, Kenya
2024
·
Hellen Koka
, Solomon Langat
, et al.
·
PLoS ONE
·
10
PDF
Comparative performance of light trap types, lunar influence and sandfly abundance in Baringo district, Kenya.
2010
·
Sichangi Kasili
, Philip M Ngumbi
, et al.
·
PubMed
·
10
Isolation and phylogenetic characterization of arboviruses circulating among phlebotomine sandflies in parts of North Rift, Kenya
2024
·
Edith Koskei
, Solomon Langat
, et al.
·
Frontiers in Virology
·
8
PDF
Genetic diversity of Aedes aegypti populations from Kisumu and Busia counties, western Kenya, and their vector competence for chikungunya virus
2025
·
Victor O. Anyango
, Solomon Langat
, et al.
·
PLoS ONE
·
6
Combining Morphological and Molecular Tools Can Enhance Tick Species Identification for Improved Tick-Borne Disease Surveillance Among Pastoral Communities in Kenya
2024
·
Hellen Koka
, Solomon Langat
, et al.
·
Vector-Borne and Zoonotic Diseases
·
6
Evidence of circulation of Orthobunyaviruses in diverse mosquito species in Kwale County, Kenya
2021
·
Hellen Koka
, Joel Lutomiah
, et al.
·
Virology Journal
·
6
PDF
Whole-genome sequence analysis reveals the circulation of multiple SARS-CoV-2 variants of concern in Nairobi and neighboring counties, Kenya between March and July 2021
2022
·
Samoel Ashimosi Khamadi
, Silvanos Opanda
, et al.
·
Virology Journal
·
5
PDF
Characterization of West Nile virus Koutango lineage from phlebotomine sandflies in Kenya
2024
·
Jane Wambui Thiiru
, Solomon Langat
, et al.
·
PLoS ONE
·
3
Genomic sequence analysis of the first mpox virus detected in Kenya
2024
·
Solomon K. Langat
, Konongoi Limbaso
, et al.
·
bioRxiv (Cold Spring Harbor Laboratory)
·
2
Isolation and molecular characterization of West Nile Virus with evidence of vertical transmission in the Coastal region, Kenya
2026
·
Tabitha Wanjiru
, Solomon Langat
, et al.
·
Microbiology Spectrum
·
1
PDF
Isolation and Growth Kinetics of Bogoria Virus from Phlebotomine Sandflies Sampled in Baringo, Kenya
2024
·
Jane Wambui Thiiru
, Solomon Langat
, et al.
·
American Journal of Tropical Medicine and Hygiene
·
1
PDF
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Works count:
28
Citation count:
1,101
H-index:
14
I10-index:
16
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