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O. Anzala · SciRah

Researcher profile · Semantic Scholar

O. Anzala

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O. Anzala — researcher profile on SciRah

h-index: 37
Works: 241
Citations: 4,891

Most-cited papers

Bombali Virus in Mops condylurus Bat, Kenya
K. Forbes, P. Webala, A. Jääskeläinen, S. Abdurahman +14 more
2019Emerging Infectious Diseases94 citations Open access
Semantic Scholar
Safety and Immunogenicity of a 2-Dose Heterologous Vaccine Regimen With Ad26.ZEBOV and MVA-BN-Filo Ebola Vaccines: 12-Month Data From a Phase 1 Randomized Clinical Trial in Nairobi, Kenya
G. Mutua, O. Anzala, K. Luhn, C. Robinson +3 more
2019Journal of Infectious Diseases81 citations Open access
Semantic Scholar
Impact of Standard Bacterial Vaginosis Treatment on the Genital Microbiota, Immune Milieu, and Ex Vivo Human Immunodeficiency Virus Susceptibility.
V. Joag, Onyango J I Obila, P. Gajer, M. Scott +13 more
2018Clinical Infectious Diseases75 citations Open access
Semantic Scholar
Safety and immunogenicity of 2-dose heterologous Ad26.ZEBOV, MVA-BN-Filo Ebola vaccination in healthy and HIV-infected adults: A randomised, placebo-controlled Phase II clinical trial in Africa
H. Barry, G. Mutua, H. Kibuuka, Zacchaeus Anywaine +19 more
2021PLoS Medicine60 citations Open access
Semantic Scholar
Safety and immunogenicity of 2-dose heterologous Ad26.ZEBOV, MVA-BN-Filo Ebola vaccination in children and adolescents in Africa: A randomised, placebo-controlled, multicentre Phase II clinical trial
Zacchaeus Anywaine, H. Barry, O. Anzala, G. Mutua +19 more
2022PLoS Medicine50 citations Open access
Semantic Scholar
High seroprevalence of SARS-CoV-2 but low infection fatality ratio eight months after introduction in Nairobi, Kenya
I. Ngere, Jeanette Dawa, E. Hunsperger, Nancy A Otieno +20 more
2021International Journal of Infectious Diseases47 citations Open access
Semantic Scholar
Association between vaginal washing and vaginal bacterial concentrations
M. Sabo, J. Balkus, B. Richardson, S. Srinivasan +6 more
2019PLoS ONE35 citations Open access
Semantic Scholar
Range Expansion of Bombali Virus in Mops condylurus Bats, Kenya, 2019
L. Kareinen, J. Ogola, Ilkka Kivistö, T. Smura +11 more
2020Emerging Infectious Diseases29 citations Open access
Semantic Scholar
Identifying the immune interactions underlying HLA class I disease associations
Bisrat J. Debebe, L. Boelen, James C. Lee, E. Sanders +21 more
2020eLife28 citations Open access
Semantic Scholar
Mycoplasma genitalium infection in Kenyan and US women
J. Balkus, L. Manhart, J. Jensen, O. Anzala +6 more
2018Sexually Transmitted Diseases28 citations Open access
Semantic Scholar
High Prevalence of Multidrug-Resistant Clostridioides difficile Following Extensive Use of Antimicrobials in Hospitalized Patients in Kenya
W. Mutai, M. Mureithi, O. Anzala, G. Revathi +6 more
2021Frontiers in Cellular and Infection Microbiology27 citations Open access
Semantic Scholar
Immune profile and responses of a novel dengue DNA vaccine encoding an EDIII-NS1 consensus design based on Indo-African sequences
A. Sankaradoss, S. Jagtap, J. Nazir, Shefta E. Moula +27 more
2022Molecular Therapy26 citations Open access
Semantic Scholar
Latent tuberculosis among household contacts of pulmonary tuberculosis cases in Nairobi, Kenya
S. Odera, M. Mureithi, Andrew Aballa, Noel Onyango +2 more
2020The Pan African Medical Journal23 citations Open access
Semantic Scholar
Cohort Profile: IAVI’s HIV epidemiology and early infection cohort studies in Africa to support vaccine discovery
Matt A. Price, W. Kilembe, E. Ruzagira, E. Karita +26 more
2020International Journal of Epidemiology23 citations Open access
Semantic Scholar
The effects of aflatoxin exposure on Hepatitis B-vaccine induced immunity in Kenyan children
D. Githanga, Ruth Nabwire Wangia, M. Mureithi, So Wandiga +5 more
2019Current Problems in Pediatric and Adolescent Health Care23 citations Open access
Semantic Scholar
Multiple Cytokines Elevated in Patients with Keloids: Is It an Indication of Auto-Inflammatory Disease?
F. Nangole, K. Ouyang, O. Anzala, J. Ogeng'o +1 more
2021Journal of Inflammation Research22 citations Open access
Semantic Scholar
Detection of dengue virus type 2 of Indian origin in acute febrile patients in rural Kenya
M. Masika, E. Korhonen, T. Smura, R. Uusitalo +6 more
2020PLoS Neglected Tropical Diseases22 citations Open access
Semantic Scholar
Prevalence and functional profile of SARS-CoV-2 T cells in asymptomatic Kenyan adults
T. Samandari, Joshua Ongalo, K. McCarthy, R. Biegon +17 more
2023Journal of Clinical Investigation21 citations Open access
Semantic Scholar
Association between Vaginal Bacterial Microbiota and Vaginal Yeast Colonization.
M. Eastment, J. Balkus, B. A. Richardson, S. Srinivasan +6 more
2020Journal of Infectious Diseases20 citations Open access
Semantic Scholar
Control of the HIV-1 Load Varies by Viral Subtype in a Large Cohort of African Adults With Incident HIV-1 Infection
Matt A. Price, W. Rida, W. Kilembe, E. Karita +24 more
2019Journal of Infectious Diseases20 citations Open access
Semantic Scholar
Cancer in Kenya: types and infection-attributable. Data from the adult population of two National referral hospitals (2008-2012)
L. Macharia, M. Mureithi, O. Anzala
2018AAS Open Research19 citations Open access
Semantic Scholar
Associations Between Vaginal Bacteria and Bacterial Vaginosis Signs and Symptoms: A Comparative Study of Kenyan and American Women
Kayla A. Carter, J. Balkus, O. Anzala, J. Kimani +6 more
2022Frontiers in Cellular and Infection Microbiology17 citations Open access
Semantic Scholar
Quantifying rates of HIV-1 flow between risk groups and geographic locations in Kenya: A country-wide phylogenetic study
G. Nduva, Frederick C. F. Otieno, J. Kimani, E. Wahome +16 more
2022Virus Evolution17 citations Open access
Semantic Scholar
Validation of urinary sphingolipid metabolites as biomarker of effect for fumonisins exposure in Kenyan children
Ruth Nabwire Wangia, D. Githanga, Kathy S. Xue, Li-Li Tang +2 more
2019Biomarkers17 citations
Semantic Scholar
Seasonal influenza vaccination in Kenya: an economic evaluation using dynamic transmission modelling
Jeanette Dawa, G. Emukule, E. Barasa, Marc Alain Widdowson +5 more
2020BMC Medicine16 citations Open access
Semantic Scholar
Epidemiological and clinical characteristics of patients hospitalised with COVID-19 in Kenya: a multicentre cohort study
L. Ombajo, N. Mutono, Paul Sudi, Mbuvi P. Mutua +12 more
2022BMJ Open14 citations Open access
Semantic Scholar
EPIDEMIOLOGICAL AND CLINICAL CHARACTERISTICS OF COVID-19 PATIENTS IN KENYA
L. Ombajo, N. Mutono, Paul Sudi, Mbuvi P. Mutua +12 more
2020medRxiv14 citations Open access
Semantic Scholar
Antimicrobial Resistance Profiling and Phylogenetic Analysis of Neisseria gonorrhoeae Clinical Isolates From Kenya in a Resource-Limited Setting
M. Juma, A. Sankaradoss, Redcliff Ndombi, Patrick Mwaura +11 more
2020Frontiers in Microbiology14 citations Open access
Semantic Scholar
Nutrition and growth outcomes are affected by aflatoxin exposures in Kenyan children
Ruth Nabwire Wangia-Dixon, Kathy S. Xue, Jessica Alcala, T. Quach +6 more
2020Food Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment14 citations
Semantic Scholar
Seroevidence of Zoonotic Viruses in Rodents and Humans in Kibera Informal Settlement, Nairobi, Kenya
J. Ogola, Hussein Alburkat, M. Masika, E. Korhonen +6 more
2021Vector Borne and Zoonotic Diseases12 citations Open access
Semantic Scholar
Acceptability and tolerability of repeated intramuscular electroporation of Multi-antigenic HIV (HIVMAG) DNA vaccine among healthy African participants in a phase 1 randomized controlled trial
J. Mpendo, G. Mutua, A. Nanvubya, O. Anzala +9 more
2020PLoS ONE12 citations Open access
Semantic Scholar
Infectious disease modelling for SARS-CoV-2 in Africa to guide policy: A systematic review
T. Kimani, M. Nyamai, Lillian Owino, Anita Makori +4 more
2022Epidemics11 citations Open access
Semantic Scholar
Vaginal bacteria and risk of incident and persistent infection with high risk sub-types of human papillomavirus: a cohort study among Kenyan women
Kayla A. Carter, S. Srinivasan, T. Fiedler, O. Anzala +6 more
2020Sexually Transmitted Diseases11 citations Open access
Semantic Scholar
Determinants of aflatoxin exposures in Kenyan School-aged children
Ruth Nabwire Wangia-Dixon, T. Quach, Xiao Song, J. Ombaka +3 more
2020International Journal of Environmental Health Research11 citations
Semantic Scholar
The effects of exposures to mycotoxins on immunity in children: A systematic review
D. Githang'a, O. Anzala, C. Mutegi, A. Agweyu
2019Current Problems in Pediatric and Adolescent Health Care11 citations Open access
Semantic Scholar
αEβ7, α4β7 and α4β1 integrin contributions to T cell distribution in blood, cervix and rectal tissues: Potential implications for HIV transmission
C. Perciani, W. Jaoko, B. Farah, M. Ostrowski +2 more
2018PLoS ONE11 citations Open access
Semantic Scholar
Near-Complete SARS-CoV-2 Seroprevalence among Rural and Urban Kenyans despite Significant Vaccine Hesitancy and Refusal
C. Nasimiyu, I. Ngere, Jeanette Dawa, P. Amoth +18 more
2022Vaccines10 citations Open access
Semantic Scholar
Aflatoxin exposure in children age 6–12 years: a study protocol of a randomized comparative cross-sectional study in Kenya, East Africa
Ruth Nabwire Wangia, D. Githanga, Jia-Sheng Wang, O. Anzala
2019Pilot and Feasibility Studies9 citations Open access
Semantic Scholar
Prediction of extended high viremia among newly HIV-1-infected persons in sub-Saharan Africa
K. Powers, M. Price, E. Karita, A. Kamali +11 more
2018PLoS ONE9 citations Open access
Semantic Scholar
Treatment Success Following Standard Antibiotic Treatment for Bacterial Vaginosis Is Not Associated With Pretreatment Genital Immune or Microbial Parameters
E. Armstrong, A. Hemmerling, V. Joag, S. Huibner +10 more
2023Open Forum Infectious Diseases8 citations Open access
Semantic Scholar
Metabolic and mitochondrial dysregulation in CD4+ T cells from HIV-positive women on combination anti-retroviral therapy
M. Akiso, Magdalene K. Ameka, K. Naidoo, R. Langat +6 more
2023PLoS ONE8 citations Open access
Semantic Scholar
Association between human leukocyte antigen class II (HLA-DRB and -DQB) alleles and outcome of exposure to Mycobacterium tuberculosis: a cross-sectional study in Nairobi, Kenya
S. Odera, M. Mureithi, Andrew Aballa, Noel Onyango +5 more
2022The Pan African Medical Journal8 citations Open access
Semantic Scholar
Serological Evidence of Exposure to Onyong-Nyong and Chikungunya Viruses in Febrile Patients of Rural Taita-Taveta County and Urban Kibera Informal Settlement in Nairobi, Kenya
M. Masika, E. Korhonen, T. Smura, R. Uusitalo +9 more
2022Viruses8 citations Open access
Semantic Scholar
Differentiated Service Delivery Models for Maintaining HIV Treatment and Prevention Services During Crisis and Disease Outbreaks: Lessons from the COVID-19 Pandemic
N. Njuguna, Christopher Akolo, O. Anzala, J. Baeten +3 more
2024Current HIV/AIDS Reports7 citations
Semantic Scholar
Immune response of a two-dose heterologous Ebola vaccine regimen: summary of three African clinical trials using a single validated Filovirus Animal Nonclinical Group enzyme-linked immunosorbent assay in a single accredited laboratory
Chelsea McLean, H. Barry, M. Kieh, Zacchaeus Anywaine +23 more
2023EBioMedicine7 citations Open access
Semantic Scholar
Cross-reactivity of glycan-reactive HIV-1 broadly neutralizing antibodies with parasite glycans
I. Huettner, S. A. Krumm, Sonia Serna, K. Brzezicka +26 more
2022Cell Reports6 citations Open access
Semantic Scholar
Performance of International AIDS Vaccine Initiative African clinical research laboratories in standardised ELISpot and peripheral blood mononuclear cell processing in support of HIV vaccine clinical trials
R. Langat, B. Farah, Jackton Indangasi, S. Ogola +14 more
2021African Journal of Laboratory Medicine6 citations Open access
Semantic Scholar
Does Keloids Histology Influence Recurrence?
F. Nangole, K. Ouyang, O. Anzala, J. Ogeng'o +2 more
2021American journal of dermatopathology6 citations Open access
Semantic Scholar
Early antiretroviral therapy and its impact on natural killer cell dynamics in HIV-1 infected men who have sex with men: a cross-sectional pilot study evaluating the impact of early ART initiation on NK cell perturbation in HIV infection
M. Akiso, Daniel Muema, R. Langat, K. Naidoo +7 more
2024Microbiology spectrum5 citations Open access
Semantic Scholar
Safety and immunogenicity of an Ad26.ZEBOV booster vaccine in Human Immunodeficiency Virus positive (HIV+) adults previously vaccinated with the Ad26.ZEBOV, MVA-BN-Filo vaccine regimen against Ebola: A single-arm, open-label Phase II clinical trial in Kenya and Uganda.
Edward Man-Lik Choi, Ggayi Abu-Baker Mustapher, G. Omosa-Manyonyi, Julie Foster +22 more
2023Vaccine5 citations Open access
Semantic Scholar

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M. Masika×9
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M. Masika — researcher profile on SciRah
G. Mutua×8
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M. Mureithi×7
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M. Mureithi — researcher profile on SciRah
J. Kimani×7
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