Charity Oga‐Omenka

Datos Biográficos

ID5412209
NOMBRECharity Oga‐Omenka
NOMBRESCharity
APELLIDOOga‐Omenka
FIRMAOMENKA C O
AFILIACIONESUniversity of Waterloo
ORCID0000-0003-0779-570X
VERIFICADOSí
TOTAL DE OBRAS24
TOTAL DE CITAS2
TOTAL COMO AUTOR21
TOTAL COMO EDITOR3
PRIMER AÑO DE PUBLICACIÓN2017
AÑO MÁS RECIENTE DE PUBLICACIÓN2026
ÍNDICE H1

  • Delays in tuberculosis diagnosis and treatment in India

    Open AccessMohammad Abdullah Heel Kafi, Poshan Thapa et al.ARTICLEPLOS Global Public Health2026

    Tuberculosis (TB) care for people with TB in India are often fragmented, undermining timely diagnosis and treatment. Understanding patient journeys is critical to strengthening TB care delivery and advancing elimination goals. We conducted a cross-sectional study of 400 people with TB diagnosed between 2020–2022 in two Indian cities: Mumbai (n = 200) and Patna (n = 200). Using structured interviews, we assessed care-seeking behavior, delays to di…

  • Antibiotic dispensing practices and determinants among informal healthcare providers in low- and middle-income countries

    Open AccessPoshan Thapa, Meera Tandan et al.ARTICLEBMJ Global Health2026

    INTRODUCTION: Antimicrobial stewardship efforts in low- and middle-income countries (LMICs) largely focus on qualified practitioners, yet informal healthcare providers (IPs) deliver much of the primary care. Although these providers frequently dispense antibiotics, their practices remain poorly documented and are not captured in existing surveillance systems. METHODS: Using the Joanna Briggs Institute methodology, this scoping review synthesised …

  • Barriers and facilitators to antibiotic stewardship in Nigeria’s private healthcare sector

    Open AccessAaya Mahdi, Sarah Pascale Ngassa Detchaptche et al.ARTICLEPLOS Global Public Health2026

    Antimicrobial resistance (AMR) poses a growing global health concern, particularly in low- and middle-income countries (LMICs) such as Nigeria, where stewardship efforts have largely overlooked the private healthcare sector. Given that most Nigerians seek care from private providers, understanding the barriers and opportunities for implementing antibiotic stewardship programs in this setting is critical. We conducted a qualitative study consistin…

  • A methodological review of patient healthcare-seeking journeys from symptom onset to receipt of care

    Open AccessCharity Oga‐Omenka, Angelina Sassi et al.ARTICLEBMJ Global Health2025

    BACKGROUND: For many diseases, early diagnosis and treatment are more cost-effective, reduce community spread of infectious diseases and result in better patient outcomes. However, healthcare-seeking and diagnoses for several diseases are unnecessarily delayed. For example, in 2022, 3 million and 5.6 million people living with tuberculosis (TB) and HIV, respectively, were undiagnosed. Many patients never access appropriate testing, remain undiagn…

  • Health and tuberculosis systems resilience, the role of the private sector and pandemic preparedness

    Open AccessLaura Jane Brubacher, Vijayashree Yellappa et al.ARTICLEBMJ Global Health2025

    Introduction The COVID-19 pandemic was an unprecedented challenge to health systems worldwide and had a severe impact on tuberculosis (TB) case notifications and service delivery. India, Indonesia and Nigeria are high TB-burden countries where the majority of initial care-seeking happens in the private health sector. The objectives of this study were to (1) explore policy-makers’ perspectives on the impact of the COVID-19 pandemic on private sect…

  • Fighting tuberculosis hand in hand

    Open AccessNandini Venkatesan, Lena Faust et al.ARTICLEPLOS Global Public Health2025

    Tuberculosis (TB) is an infectious disease closely intertwined with stigma, discrimination, and the social determinants of health. Communities of people affected by TB are experts in their care pathways, but the TB field continues to fall short of meaningfully engaging communities in TB research. This is a missed opportunity to improve the quality, relevance, person-centeredness, positive impact, and sustainability of TB research outputs. We ackn…

  • Factors associated with inequalities in malnutrition among children in Ghana using the 2022 GDHS and WHO Heat framework

    Open AccessEugene Budu, Ebenezer Kwesi Armah‐Ansah et al.ARTICLEBMC Public Health2025

    This study revealed the existence of inequalities in malnutrition among children in Ghana, which is influenced by child's age, maternal economic status, maternal education, place of residence, and subnational region. To tackle the issues of child malnutrition in Ghana, it is vital to implement targeted interventions that address age-related disparities and implement social protection programs. Subnational region disparities must be addressed by d…

  • A socio-ecological analysis of intimate partner violence among women of reproductive age in Nigeria

    Open AccessEbenezer Kwesi Armah‐Ansah, Seun Adegboyega Adejumo et al.ARTICLEBMC Public Health2025

    The research indicates that intimate partner violence continues to be a significant public health concern in Nigeria, with approximately 25.94% of women of reproductive age experiencing IPV from 2008 to 2018, reaching a peak of 33.24% in 2018, which signals a troubling upward trend. The most common type of violence reported was emotional abuse, impacting nearly 22% of women. Major risk factors identified include lower educational attainment for b…

  • Individual journeys to tuberculosis care in Nigeria’s private sector during the Covid-19 pandemic

    Open AccessCharity Oga‐Omenka, Lauren Rosapep et al.ARTICLEBMJ Global Health2024

    BACKGROUND: Pre-COVID-19, individuals with tuberculosis (TB) in Nigeria were often underdiagnosed and untreated. TB services were mostly in the public sector with only 15% of new cases in 2019 reported from the private sector. Reports highlighted challenges in accessing care in the private sector, which accounted for 67% of all initial care-seeking. Our study examined patients' health seeking pathways for TB in Nigeria's private sector and explor…

  • Private sector tuberculosis care quality during the Covid-19 pandemic

    Open AccessAngelina Sassi, Lauren Rosapep et al.ARTICLEBMJ Global Health2024

    Only a third of tuberculosis (TB) cases in Nigeria in 2020 were diagnosed and notified, in part due to low detection and under-reporting from the private health sector. Using a standardised patient (SP) survey approach, we assessed how management of presumptive TB in the private sector aligns with national guidelines and whether this differed from a study conducted before the start of the COVID-19 pandemic. 13 SPs presented a presumptive TB case …

  • The shifting landscape of private healthcare providers before and during the Covid-19 pandemic

    Open AccessRodiah Widarna, Nur Afifah et al.ARTICLEPLOS Global Public Health2024

    Introduction COVID-19 pandemic changed many aspects of healthcare services and deliveries, including among private healthcare providers (i.e., private healthcare facilities [HCFs] and private practitioners [PPs]). We aimed to compare the spatial distribution of private providers and describe changes in characteristics and services offered during and before the COVID-19 pandemic, and explore the tuberculosis (TB) and COVID-19-related services offe…

  • Perceived impact of the Covid-19 pandemic and government restrictions on the lives of young adults living with HIV in Kisumu, Kenya

    Open AccessJennifer M Zech, Allison Zerbe et al.ARTICLEPLOS Global Public Health2024

    Young adults with HIV (YAHIV) may be particularly vulnerable to the impact of the COVID-19 pandemic. In this context, associated mitigation measures among YAHIV can adversely impact fragile social and economic systems. We examined the impact of the pandemic and related government-mandated restrictions among YAHIV in Kisumu, Kenya. Between April-May 2021, a cross-sectional survey was conducted among a convenience sample of YAHIV 18–25 years receiv…

  • Care pathways of individuals with tuberculosis before and during the Covid-19 pandemic in Bandung, Indonesia

    Open AccessLavanya Huria, Bony Wiem Lestari et al.ARTICLEPLOS Global Public Health2024

    The COVID-19 pandemic is thought to have undone years’ worth of progress in the fight against tuberculosis (TB). For instance, in Indonesia, a high TB burden country, TB case notifications decreased by 14% and treatment coverage decreased by 47% during COVID-19. We sought to better understand the impact of COVID-19 on TB case detection using two cross-sectional surveys conducted before (2018) and after the onset of the pandemic (2021). These surv…

  • Post-tuberculosis lung disease

    Open AccessChase Yarbrough, Juan José López Ortega et al.ARTICLEPLOS Global Public Health2024

    The burden of long-term functional impairment following curative treatment for tuberculosis (TB) constitutes a significant global health problem. By some estimates, chronic respiratory impairment, or post-tuberculosis lung disease (PTLD), is present in just over half of all patients who have completed TB therapy. Despite this high prevalence and substantial associated morbidity, discussion of PTLD is essentially absent from international and nati…

  • Impact of the Covid-19 pandemic on quality of tuberculosis care in private facilities in Bandung, Indonesia

    Open AccessAngelina Sassi, Bony Wiem Lestari et al.ARTICLEBMC Public Health2024

    Results indicate that providers successfully identify tuberculosis in their patients yet do not manage them according to national guidelines. There were no major changes found in quality of tuberculosis care due to the COVID-19 pandemic. As tuberculosis notifications have declined in Indonesia due to the COVID-19 pandemic, there remains an urgent need to increase private provider engagement in Indonesia and improve quality of care

  • Pharmacy engagement in TB prevention and care

    Open AccessRosalind Miller, Francis Wafula et al.ARTICLEBMJ Global Health2023

  • Healthcare seeking behavior among patients visiting public primary and secondary healthcare facilities in an urban Indian district

    Open AccessNajiya Fatma, Varun Ramamohan et al.ARTICLEPLOS Global Public Health2023

    In this work, we examined healthcare seeking behavior (HSB) of patients visiting public healthcare facilities in an urban context. We conducted a cross-sectional survey across twenty-two primary and secondary public healthcare facilities in the South-west Delhi district in India. The quantitative survey was designed to ascertain from patients at these facilities their HSB—i.e., on what basis patients decide the type of healthcare facility to visi…

  • Tuberculosis service disruptions and adaptations during the first year of the Covid-19 pandemic in the private health sector of two urban settings in Nigeria—A mixed methods study

    Open AccessCharity Oga‐Omenka, Angelina Sassi et al.ARTICLEPLOS Global Public Health2023

    Nigeria has the second largest share of undiagnosed TB cases in the world and a large private health sector estimated to be the point of initial care-seeking for 67% of TB patients. There is evidence that COVID-19 restrictions disrupted private healthcare provision, but insufficient data on how private healthcare provision changed as a result of the pandemic. We conducted qualitative interviews and a survey to assess the impact of the pandemic, a…

  • Tuberculosis in times of Covid-19

    Open AccessAlexandra Jaye Zimmer, Joel Shyam Klinton et al.ARTICLEJournal of Epidemiology and…2022Citada por: 2Referencias: 38

    The COVID-19 pandemic has caused widespread disruptions to tuberculosis (TB) care and service delivery in 2020, setting back progress in the fight against TB by several years. As newer COVID-19 variants continue to devastate many low and middle-income countries in 2021, the extent of this setback is likely to increase. Despite these challenges, the TB community can draw on the comprehensive approaches used to manage COVID-19 to help restore progr…

  • A qualitative meta-synthesis of facilitators and barriers to tuberculosis diagnosis and treatment in Nigeria

    Open AccessCharity Oga‐Omenka, Lawrence Wakdet et al.ARTICLEBMC Public Health2021

    Case finding and treatment for TB in Nigeria currently depends more on individual patients presenting voluntarily to the hospital for care, necessitating an understanding of patient behaviors towards TB diagnosis and treatment. Our synthesis has identified several related factors that shape patients' behavior towards TB management at individual, community and health system levels that can inform future interventions

  • Finding the missing millions

    Open AccessTripti Pande, Nathaly Aguilera Vasquez et al.ARTICLEBMJ Global Health2020

    box In 2019, 10.0 million people developed tuberculosis (TB) yet 2.9 million were not notified to National TB programmes (NTPs).1 This is largely due to limited accessibility to healthcare services, underdeveloped health reporting systems, insufficient human resources and poor linkages between private providers and national authorities.2 There are various global initiatives to address this challenge, including the Find.Treat.All #EndTB initiative…

  • Factors influencing diagnosis and treatment initiation for multidrug-resistant/rifampicin-resistant tuberculosis in six sub-Saharan African countries

    Open AccessCharity Oga‐Omenka, Azhee Tseja-Akinrin et al.ARTICLEBMJ Global Health2020

  • Ease and equity of access to free DR-TB services in Nigeria- a qualitative analysis of policies, structures and processes

    Open AccessCharity Oga‐Omenka, Florence Bada et al.ARTICLEInternational Journal for Equity…2020

    In the context of Nigeria's low case-finding and treatment coverage, applying an equity of access framework was necessary to highlight gaps in care. Differing social contexts of patients adversely affected their access to DR-TB care. We identified several strengths in DR-TB care delivery, including the current financial support that should be sustained. Our findings highlight the need for government's commitment and continued interventions

  • Une santé mondiale repensée

    Open AccessMuriel Mac-Seing, Cielo Perez Osorio et al.ARTICLECanadian Journal of Public Health2017Referencias: 10