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    Association between Fcγ receptor IIA, IIIA and IIIB genetic polymorphisms and susceptibility to severe malaria anemia in children in western Kenya 

    Munde, Elly O.; Okeyo, Winnie A.; Raballah, Evans; Anyona, Samuel B.; Were, Tom; Ong’echa, John M.; Perkins, Douglas J.; Ouma, Collins (BMC Infectious Diseases, 2017-04-20)
    Background Naturally-acquired immunity to Plasmodium falciparum malaria develops after several episodes of infection. Fc gamma receptors (FcγRs) bind to immunoglobulin G (IgG) antibodies and mediate phagocytosis of opsonized ...
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    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 

    Pacheco, M. Andreína; Schneider, Kristan A.; Cheng, Qiuying; Munde, Elly O.; Ndege, Caroline; Onyango, Clinton; Raballah, Evans; Anyona, Samuel B.; Ouma, Collins; Perkins, Douglas J.; Escalante, Ananias A. (Malaria Journal, 2020-10-22)
    Background Sulfadoxine-pyrimethamine (SP) is the only anti-malarial drug formulation approved for intermittent preventive treatment in pregnancy (IPTp). However, mutations in the Plasmodium falciparum dhfr (Pfdhfr) and ...
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    Genetic variation in interleukin-7 is associated with a reduced erythropoietic response in Kenyan children infected with Plasmodium falciparum 

    Kisia, Lily E.; Kempaiah, Prakasha; Anyona, Samuel B.; Munde, Elly O.; Achieng, Angela O.; Ong’echa, John M.; Lambert, Christophe G.; Chelimo, Kiprotich; Ouma, Collins; Perkins, Douglas J; Raballah, Evans (BMC Med Genet., 2019-08-16)
    Background Severe malarial anemia (SMA) is a leading cause of malaria-related morbidity and mortality in children. The genetic factors that influence development of SMA and inefficient erythropoiesis, a central pathogenic ...
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    Erratum to: Hepatitis B virus sero-profiles and genotypes in HIV-1 infected and uninfected injection and Non-injection drug users from coastal Kenya 

    Webale, Mark K.; Budambula, Valentine; Lihana, Raphael; Musumba, Francis O.; Nyamache, Anthony K.; Budambula, Nancy L. M.; Ahmed, Aabid A.; Ouma, Collins; Were, Tom (BMC Infectious Diseases, 2015-09-03)
    Erratum After publication of [1] it came to the authors’ attention that Mark K. Webale’s name was displayed incorrectly. The correct spelling of their name has been updated in the original article and is included in this erratum.
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    Factors associated with non-adherence to Artemisinin-based combination therapy (ACT) to malaria in a rural population from holoendemic region of western Kenya 

    Onyango, Elizabeth O; Ayodo, George; Watsierah, Carren A; Were, Tom; Okumu, Wilson; Anyona, Samuel B; Raballah, Evans; Okoth, John M; Gumo, Sussy; Orinda, George O; Ouma, Collins (National Library of Medicine, 2012-06-24)
    Background: Over the years, reports implicate improper anti-malarial use as a major contributor of morbidity and mortality amongst millions of residents in malaria endemic areas, Kenya included. However, there are limited ...
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    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 

    Munde, Elly O.; Okeyo, Winnie A.; Anyona, Samwel B.; Raballah, Evans; Konah, Stephen; Okumu, Wilson; Ogonda, Lilian; Vulule, John; Ouma, Collins (ASM Journals, 2012-11-12)
    An understanding of the immunogenetic basis of naturally acquired immunity to Plasmodium falciparum infection would aid in the designing of a rationally based malaria vaccine. Variants within the Fc gamma receptors (FcγRs) ...
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    Comparative genomic and phenotypic characterization of invasive non-typhoidal Salmonella isolates from Siaya, Kenya 

    Kubicek-Sutherland, Jessica Z.; Xie, Gary; Shakya, Migun; Dighe, Priya K.; Jacobs, Lindsey L.; Daligault, Hajnalka; Davenport, Karen; Stromberg, Loreen R.; Stromberg, Zachary R.; Cheng, Qiuying; Kempaiah, Prakasha; Ong’echa, John Michael; Otieno, Vincent; Raballah, Evans; Anyona, Samuel; Ouma, Collins; Chain, Patrick S. G.; Perkins, Douglas J.; Mukundan, Harshini; McMahon, Benjamin H.; Doggett, Norman A. (PLOS ONE, 2021-01-01)
    Non-typhoidal Salmonella (NTS) is a major global health concern that often causes bloodstream infections in areas of the world affected by malnutrition and comorbidities such as HIV and malaria. Developing a strategy to ...
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    Direct detection of bacteremia by exploiting host-pathogen interactions of lipoteichoic acid and lipopolysaccharide 

    Kubicek-Sutherland, Jessica Z.; Vu, Dung M.; Aneesa, Noormohamed; Mendez, Heather M.; Stromberg, Loreen R.; Pedersen, Christine A.; Hengartner, Astrid C.; Klosterman, Katja E.; Haley, A. Bridgewater; Otieno, Vincent; Cheng, Qiuying; Anyona, Samuel B.; Ouma, Collins; Raballah, Evans; Perkins, Douglas J.; McMahon, Benjamin H.; Mukundan, Harshini (Scientific Reports, 2019-04-17)
    Bacteremia is a leading cause of death in sub-Saharan Africa where childhood mortality rates are the highest in the world. The early diagnosis of bacteremia and initiation of treatment saves lives, especially in high-disease ...
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    Interleukin (IL)-13 promoter polymorphisms (-7402 T/G and -4729G/A) condition susceptibility to pediatric severe malarial anemia but not circulating IL-13 levels 

    Okeyo, Winnie A; Munde, Elly O; Okumu, Wilson; Raballah, Evans; Anyona, Samuel B; Vulule, John M; Ong’echa, John M; Perkins, Douglas J; Ouma, Collins (BMC Immunology, 2013-03-25)
    In holoendemic Plasmodium falciparum transmission areas such as western Kenya, severe malarial anemia [SMA, hemoglobin (Hb) < 6.0 g/dL, with any density parasitemia] is the most common clinical manifestation of severe ...
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    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 

    Kisuya, Job; Chemtai, Alex; Raballah, Evans; Keter, Alfred; Ouma, Collins (Microbiology Resource Announcements, 2019-04)
    Acid Fast Bacilli (AFB) microscopy smear remains the most widely used laboratory diagnostic technique for Pulmonary Tuberculosis (PTB) in low-and-middle income countries. Although it is highly specific, the sensitivity ...
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    Ouma, Collins (21)
    Raballah, Evans (19)Anyona, Samuel B. (8)Perkins, Douglas J. (8)Cheng, Qiuying (7)Munde, Elly O. (7)Okumu, Wilson (7)Anyona, Samuel B (6)Were, Tom (6)McMahon, Benjamin H. (5)... View MoreSubjectChanges , frequencies, Plasmodium, falciparum, dhps , dhfr drug-resistant, mutations, children ,Western, Kenya from 2005 to 2018: the rise of Pfdhps S436H (1)Clinical, chemistry, profiles, injection, heroin users (1)Comparative, genomic , phenotypic, characterization ,invasive, non-typhoidal ,Salmonella, isolates (1)Cyclooxygenase-2, haplotypes, longitudinal, risk , malaria ,severe ,malarial, anemia, Kenyan, children, holoendemic ,transmission, region (1)Diagnostic, accuracy, Th1 (IFN-γ, TNF-α, and IL-2) Th2 (IL-4, IL-6 ,IL-10) cytokines, response , AFB, microscopy, smear, negative, PTB- HIV co-infected, patients (1)Direct, detection, bacteremia, exploiting, host-pathogen, interactions, lipoteichoic, acid, lipopolysaccharide (1)Erratum to: Hepatitis B virus, sero-profiles, genotypes, HIV-1 infected, uninfected, injection,Non-injection, drug,users (1)Fcγ receptor IIA, IIIA ,IIIB, genetic, polymorphisms severe malaria, anemia, children (1)Genetic, variation, interleukin-7, associated , reduced, erythropoietic, response, Kenyan, children, infected, Plasmodium, falciparum (1)Haplotype , non-synonymous, mutations, IL-23R , associated, susceptibility,severe, malaria, anemia , P. falciparum, holoendemic, transmission (1)... View MoreDate Issued2020 - 2023 (5)2012 - 2019 (16)Has File(s)Yes (21)

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