Accueil › Annuaire des chercheurs › Collins Ouma
Collins Ouma
Affiliation : Maseno University · Kenya Medical Research Institute
- 94Publications (affiliation kényane)
Profil de recherche
Collins Ouma compte 94 publications référencées (2006–2025). Ses travaux paraissent principalement dans « Malaria Journal », « BMC Infectious Diseases » et « Infection and Immunity ». Son article le plus cité, « Increased severe anemia in HIV-1-exposed and HIV-1-positive infants and children during acute malaria » (2006), a été cité 143 fois. 16 de ces publications datent des trois dernières années d’activité. Ses travaux sont cosignés avec au moins 12 chercheurs, notamment dans des établissements de États-Unis, Japon, Royaume-Uni, Ghana.
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- Diagnostic accuracy of PfHRP2-based malaria rapid diagnostic tests and antigenemia persistence in Kenyan children from a holoendemic region: implications for case management and surveillance
- Regional variation in sulfadoxine-pyrimethamine resistance genotypes and haplotypes of Plasmodium falciparum dihydrofolate reductase and dihydropteroate synthase genes in Western Kenya
- Entire expressed peripheral blood transcriptome in pediatric severe malarial anemia
- Impact of integrated WASH and maternal and child health interventions on diarrhea disease prevalence in a resource-constrained setting in Kenya
- Factors influencing patients’ adherence to malaria artemisinin-based combination therapy in Kamuli District, Uganda
- Methodological assessment for efficient collection of Schistosoma mansoni environmental DNA and improved schistosomiasis surveillance in tropical wetlands
- Seasonality of associations between production of indigenous foods and food security status of mother-child dyads in Kisumu County, Kenya
- Enhancing cervical cancer knowledge among women of reproductive age: a dialogue-based community health education intervention in rural Kisumu County, Kenya
- Comparison of different trapping methods to collect malaria vectors indoors and outdoors in western Kenya
- Increased sensitivity of malaria parasites to common antimalaria drugs after the introduction of artemether-lumefantrine: Implication of policy change and implementation of more effective drugs in fight against malaria
- Factors associated with tuberculosis drug resistance among presumptive multidrug resistance tuberculosis patients identified in a DRTB surveillance study in western Kenya
- Barriers and misconceptions hindering reduction of intestinal schistosomiasis in Mbita Sub-County, Western Kenya
- Improving cervical cancer screening rates among women of reproductive age in rural Kisumu County through dialogue-based community health education
- Transcriptomic and Proteomic Insights into Host Immune Responses in Pediatric Severe Malarial Anemia: Dysregulation in HSP60-70-TLR2/4 Signaling and Altered Glutamine Metabolism
- Efficacy of PermaNet® Dual compared to Interceptor® G2 and PermaNet 3.0 in experimental huts in Siaya County, western Kenya
- Protocol for the PATHOME study: a cohort study on urban societal development and the ecology of enteric disease transmission among infants, domestic animals and the environment
- Health care provider practices in diagnosis and treatment of malaria in rural communities in Kisumu County, Kenya
- Prevalence of brucellosis in livestock keepers and domestic ruminants in Baringo County, Kenya
- Risk associations of submicroscopic malaria infection in lakeshore, plateau and highland areas of Kisumu County in western Kenya
- Clinical malaria incidence and health seeking pattern in geographically heterogeneous landscape of western Kenya
- Evidence of co-exposure with Brucella spp, Coxiella burnetii, and Rift Valley fever virus among various species of wildlife in Kenya
- Influence of landscape heterogeneity on entomological and parasitological indices of malaria in Kisumu, Western Kenya
- Impact of integrated water, sanitation, hygiene, health and nutritional interventions on diarrhoea disease epidemiology and microbial quality of water in a resource‐constrained setting in Kenya: A controlled intervention study
- Genetic differentiation in East African ethnicities and its relationship with endurance running success
- Molecular epidemiology of Brucella species in mixed livestock-human ecosystems in Kenya
- Socio-economic impacts of brucellosis on livestock production and reproduction performance in Koibatek and Marigat regions, Baringo County, Kenya
- Changes in the frequencies of Plasmodium falciparum dhps and dhfr drug-resistant mutations in children from Western Kenya from 2005 to 2018: the rise of Pfdhps S436H
- Serological and molecular evidence of Brucella species in the rapidly growing pig sector in Kenya
- Acceptability, adherence, and clinical outcomes, of amoxicillin dispersible tablets versus oral suspension in treatment of children aged 2–59 Months with pneumonia, Kenya: A cluster randomized controlled trial
- Association between haematological parameters and sickle cell genotypes in children with Plasmodium falciparum malaria resident in Kisumu County in Western Kenya
- Influence of blood group, Glucose-6-phosphate dehydrogenase and Haemoglobin genotype on Falciparum malaria in children in Vihiga highland of Western Kenya
- Long-Acting Reversible Contraception Uptake and Associated Factors among Women of Reproductive Age in Rural Kenya
- The diagnostic accuracy of Th1 (IFN-γ, TNF-α, and IL-2) and Th2 (IL-4, IL-6 and IL-10) cytokines response in AFB microscopy smear negative PTB- HIV co-infected patients
- Direct detection of bacteremia by exploiting host-pathogen interactions of lipoteichoic acid and lipopolysaccharide
- Molecular basis of reduced LAIR1 expression in childhood severe malarial anaemia: Implications for leukocyte inhibitory signalling
- Integrated OMICS platforms identify LAIR1 genetic variants as novel predictors of cross-sectional and longitudinal susceptibility to severe malaria and all-cause mortality in Kenyan children
- Spatial epidemiology of tuberculosis in the high-burden counties of Kisumu and Siaya, Western Kenya, 2012–2015
- Cyclooxygenase-2 haplotypes influence the longitudinal risk of malaria and severe malarial anemia in Kenyan children from a holoendemic transmission region
- Genetic variation in interleukin-7 is associated with a reduced erythropoietic response in Kenyan children infected with Plasmodium falciparum
- Spatial distribution and habitat characterization of mosquito species during the dry season along the Mara River and its tributaries, in Kenya and Tanzania
- Differential virulence of camel Trypanosoma evansi isolates in mice
- Genetic Differentiation of Glossina pallidipes Tsetse Flies in Southern Kenya
- Multiple evolutionary origins of Trypanosoma evansi in Kenya
- Association between Fcγ receptor IIA, IIIA and IIIB genetic polymorphisms and susceptibility to severe malaria anemia in children in western Kenya
- Temporal genetic differentiation in Glossina pallidipes tsetse fly populations in Kenya
- Haplotype of non-synonymous mutations within IL-23R is associated with susceptibility to severe malaria anemia in a P. falciparum holoendemic transmission area of Kenya
- Assessment of community health volunteers’ knowledge on cervical cancer in Kadibo Division, Kisumu County: a cross sectional survey
- Maternal Vitamin D Status and Adverse Birth Outcomes in Children from Rural Western Kenya
- Presence of the knockdown resistance mutation, Vgsc-1014F in Anopheles gambiae and An. arabiensis in western Kenya
- Presence and distribution of mosquito larvae predators and factors influencing their abundance along the Mara River, Kenya and Tanzania
- Reduced Transplacental Transfer of a Subset of Epstein-Barr Virus-Specific Antibodies to Neonates of Mothers Infected with Plasmodium falciparum Malaria during Pregnancy
- Hepatitis B virus sero-profiles and genotypes in HIV-1 infected and uninfected injection and Non-injection drug users from coastal Kenya
- HIV-1 protease inhibitor drug resistance in Kenyan antiretroviral treatment-naive and -experienced injection drug users and non-drug users
- Determinants of Cervical screening services uptake among 18–49 year old women seeking services at the Jaramogi Oginga Odinga Teaching and Referral Hospital, Kisumu, Kenya
- Pyrethroid susceptibility of malaria vectors in four Districts of western Kenya
- Distribution and abundance of schistosomiasis and fascioliasis host snails along the Mara River in Kenya and Tanzania
- Serratia marcescensis injurious to intestinal epithelial cells
- Access to artemisinin-based combination therapy (ACT) and quinine in malaria holoendemic regions of western Kenya
- A non-synonymous polymorphism in IL-23R Gene (rs1884444) is associated with reduced risk to schistosomiasis-associated Immune Reconstitution Inflammatory Syndrome in a Kenyan population
- Clinical chemistry profiles in injection heroin users from Coastal Region, Kenya
- Changes in Antigen-Specific Cytokine and Chemokine Responses to Plasmodium falciparum Antigens in a Highland Area of Kenya after a Prolonged Absence of Malaria Exposure
- The efficacy of long-lasting nets with declining physical integrity may be compromised in areas with high levels of pyrethroid resistance
- Sickle cell trait is not associated with endemic Burkitt lymphoma: An ethnicity and malaria endemicity‐matched case–control study suggests factors controlling EBV may serve as a predictive biomarker for this pediatric cancer
- Interleukin (IL)-13 promoter polymorphisms (-7402 T/G and -4729G/A) condition susceptibility to pediatric severe malarial anemia but not circulating IL-13 levels
- Communicating African Spirituality through Ecology: Challenges and Prospects for the 21st Century
- Pyrethroid resistance in Anopheles gambiae s.s. and Anopheles arabiensis in western Kenya: phenotypic, metabolic and target site characterizations of three populations
- Factors associated with non-adherence to Artemisinin-based combination therapy (ACT) to malaria in a rural population from holoendemic region of western Kenya
- Provider knowledge of treatment policy and dosing regimen with artemether-lumefantrine and quinine in malaria-endemic areas of western Kenya
- Polymorphisms in the Fc Gamma Receptor IIIA and Toll-Like Receptor 9 Are Associated with Protection against Severe Malarial Anemia and Changes in Circulating Gamma Interferon Levels
- Knowledge and behaviour as determinants of anti-malarial drug use in a peri-urban population from malaria holoendemic region of western Kenya
- Suppression of circulating IgD+CD27+ memory B cells in infants living in a malaria-endemic region of Kenya
- Functional haplotypes of Fc gamma (Fcγ) receptor (FcγRIIA and FcγRIIIB) predict risk to repeated episodes of severe malarial anemia and mortality in Kenyan children
- Functional Promoter Haplotypes of Interleukin-18 Condition Susceptibility to Severe Malarial Anemia and Childhood Mortality
- Polymorphic variability in the 3' untranslated region (UTR) of IL12B is associated with susceptibility to severe anaemia in Kenyan children with acute Plasmodium falciparum malaria
- Bacteremia in Kenyan Children Presenting with Malaria
- Elevated anti-Zta IgG levels and EBV viral load are associated with site of tumor presentation in endemic Burkitt's lymphoma patients: a case control study
- Hematological predictors of increased severe anemia in Kenyan children coinfected with Plasmodium falciparum and HIV‐1
- Clinical predictors of severe malarial anaemia in a holoendemic Plasmodium falciparum transmission area
- Haplotypes of IL12B promoter polymorphisms condition susceptibility to severe malaria and functional changes in cytokine levels in Thai adults
- Factors determining anti-malarial drug use in a peri-urban population from malaria holoendemic region of western kenya
- MIF(Macrophage Migration Inhibitory Factor) Promoter Polymorphisms and Susceptibility to Severe Malarial Anemia
- Naturally acquired hemozoin by monocytes promotes suppression of RANTES in children with malarial anemia through an IL-10-dependent mechanism
- A Novel Functional Variant in the Stem Cell Growth Factor Promoter Protects against Severe Malarial Anemia
- Suppression of a Novel Hematopoietic Mediator in Children with Severe Malarial Anemia
- Haplotypes of IL-10 promoter variants are associated with susceptibility to severe malarial anemia and functional changes in IL-10 production
- Polymorphic Variability in the Interleukin (IL)–1β Promoter Conditions Susceptibility to Severe Malarial Anemia and Functional Changes in IL‐1β Production
- Increased circulating interleukin (IL)-23 in children with malarial anemia: In vivo and in vitro relationship with co-regulatory cytokines IL-12 and IL-10
- Increased severe anemia in HIV-1-exposed and HIV-1-positive infants and children during acute malaria
- PARASITEMIA, ANEMIA, AND MALARIAL ANEMIA IN INFANTS AND YOUNG CHILDREN IN A RURAL HOLOENDEMIC PLASMODIUM FALCIPARUM TRANSMISSION AREA
- Acquisition of Hemozoin by Monocytes Down-Regulates Interleukin-12 p40 (IL-12p40) Transcripts and Circulating IL-12p70 through an IL-10-Dependent Mechanism: In Vivo and In Vitro Findings in Severe Malarial Anemia
- Role of Monocyte-Acquired Hemozoin in Suppression of Macrophage Migration Inhibitory Factor in Children with Severe Malarial Anemia
- Association of FCgamma receptor IIA (CD32) polymorphism with malarial anemia and high-density parasitemia in infants and young children.
- ASSOCIATION OF FCγ RECEPTOR IIA (CD32) POLYMORPHISM WITH MALARIAL ANEMIA AND HIGH-DENSITY PARASITEMIA IN INFANTS AND YOUNG CHILDREN
- A macrophage migration inhibitory factor promoter polymorphism is associated with high-density parasitemia in children with malaria
Revues de publication
- Malaria Journal × 12
- BMC Infectious Diseases × 8
- Infection and Immunity × 7
- Parasites & Vectors × 4
- PLoS ONE × 3
- Scientific Reports × 3
Publications par année
- 20252
- 202413
- 20231
- 20228
- 20211
- 20206
- 20198
- 20183
- 20175
- 20161
Collaborations
Établissements partenaires : University of New Mexico · Kenyatta University · University of Pittsburgh · Institute of Tropical Medicine, Nagasaki University · Tom Mboya University College
Pays des co-auteurs : États-Unis · Japon · Royaume-Uni · Ghana
Co-auteurs
- John Michael Ong’echa
- Douglas Jay Perkins
- Tom Were
- JOHN M. VULULE
- Evans O Raballah
- Samuel B. Anyona
- Harrysone Atieli
- Elly O. Munde
- Winnie A. Okeyo
- Eric Ochomo
- Walter G. Z. O. Jura
- Andrew Karanja Githeko
Données bibliographiques issues d’OpenAlex (base ouverte).
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