Investigator
Associate Professor · Addis Ababa University, Epidemiology and Biostatistics
Linking Microbiome Diversity and Immune Profiles in Ethiopian Patients With Cervical Cancer
PURPOSE This study investigates the interplay between T-cell receptor (TCR) immune characteristics and microbiome profiles to explore the relationship between immune diversity and microbial composition in cervical samples from Ethiopia. METHODS Cervical specimens were collected from patients at Tikur Anbessa Specialized Hospital in Addis Ababa, and rural Butajira, south-central Ethiopia. Patient data, including age, human papillomavirus status, pathology, and TCR immune characteristics, were analyzed with a focus on the interactions between TCR profiles and microbiome compositions in malignant samples. RESULTS Three distinct TCR profiles were identified: Group 1 (TCR active) exhibited features of active immune engagement, including high diversity, clonal expansion, and repertoire richness. Group 2 (TCR restricted) showed reduced TCR diversity and expansion, suggesting a restricted repertoire. Group 3 (TCR balanced) had moderate diversity and clonal activity. TCR repertoire groups were linked with microbial diversity, with Group 1 (TCR active) showing the highest number of microbes (high operational taxonomic units and microbial diversity). Maximum TCR clonal expansion positivity associated with microbial richness, while Group 3 (TCR balanced) was linked to reduced microbial alpha diversity. Taxonomic analysis revealed specific organisms enriched in TCR repertoire group. CONCLUSION Variations in TCR profiles are linked to distinct microbial environments in cervical cancer with greater microbial richness in patients with greater maximum productive frequency. These findings underscore the interplay between TCR diversity, microbiome composition, and malignancy, offering insights into the potential implications for microbiome-targeted therapies and prognostic biomarkers in cervical cancer.
Effect of Health Education on Cervical Cancer Screening Uptake and Knowledge among Target Women in Addis Ababa: A Randomized Controlled Trial
Abstract Health education can improve cervical cancer screening uptake; however, evidence from randomized controlled trials in the general population of Addis Ababa is limited. The aim of this study is to assess the effect of health education on screening uptake and knowledge among women aged 30 to 49 years in Addis Ababa, Ethiopia. A randomized controlled trial was conducted involving 1,300 women who had never been screened before. The intervention group received home-based health education about cervical cancer, supplemented by brochures. The χ2 test, independent sample t test, and paired t tests were used to assess pre- and pos-tintervention differences. The impact of the intervention was measured using the differences-in-differences approach. Three months after the intervention, 1,154 (88.8%) were interviewed. Screening uptake was significantly higher in the intervention group, with 241 (41.8%) of women screened compared with 93 (16.1%) in the control group. After the intervention, awareness increased by 42.2%, knowledge of symptoms increased by 23.1%, knowledge of risk factors increased by 15.2%, positive attitudes improved by 26.7%, and overall knowledge increased by 19.5% among the intervention group, indicating that the change is statistically significant. The differences-in-differences analysis indicated that 51% of the change in overall knowledge was due to the intervention. Age, occupation, and income were significantly associated with the uptake of screening, whereas the lack of time was a common barrier. Structured home-based education significantly increases cervical cancer knowledge and screening uptake. Scaling up home-based health education can significantly improve screening uptake. Prevention Relevance: Cervical cancer is the second leading cause of cancer-related morbidity and mortality among women in Ethiopia. Increasing awareness, improving access to screening, and promoting timely preventive interventions are critical to reducing the disease burden and increases life saving among women.
Cervical Cancer Screening Uptake and Sociocultural Barriers among Women in Addis Ababa, Ethiopia: Population-Based Study
Abstract Background: Cervical cancer is the second leading cause of cancer death among women in Addis Ababa and other parts of Ethiopia. Yet, there are limited age-eligible city-wide data on cervical cancer screening prevalence in Addis Ababa to inform public policy. Methods: A population-based cross-sectional study was conducted among 1881 screening eligible women aged 30 to 49 years, who were selected from 63 enumeration areas in Addis Ababa based on multistage sampling and proportional sample size allocation. Logistic regression was used to identify barriers to screening. All statistical tests were two-sided, P < 0.05. Results: Overall, 30.8% [95% confidence interval (CI), 28.8%–33.0%] of study participants reported receipt of screening in the past 5 years. Less than half (45.7%) of women reported that they received healthcare provider recommendation for screening, and only 15% of married women reported that they had spousal support for it. In the multivariable adjusted model, the odd of being screened was considerably higher in women with healthcare provider recommendation, with spousal support, and with good cervical cancer screening awareness and knowledge of risk factors for the disease. Factors associated with not seeking screening service included feeling healthy and perception of low risk for cervical cancer. Conclusions: Cervical cancer screening uptake is low in Addis Ababa, and less than half received healthcare provider recommendation. Future studies should identify barriers to provider recommendations. Impact: The findings underscore the need for a coordinated effort to enhance healthcare provider recommendations for cervical cancer screening and to raise awareness about the benefits of screening in the general population.
Characteristics of Women Seeking Cervical Cancer Cytology Screening in a Private Health Facility
Background and Objectives: Over 80% of cervical cancer cases in sub-Saharan Africa are detected at late stages, predominantly due to the lack or inaccessibility of prevention services. Public health facilities in Ethiopia offer free cervical cancer screening for eligible women. Besides the public health facilities, private providers also offer a variety of screening services at the patients’ expense. As the overall cervical cancer screening uptake in Ethiopia is still far below the 90% WHO target, coordination between all actors of the health system is key. This includes a close cooperation between the public and private sectors to combine the advantages of both to the benefit of all patients as well as media campaigns and community involvement to promote the self-initiation of screening. Materials and Methods: To gain insights into the utilization of cervical cancer screening in the private health sector, we conducted an institution-based cross-sectional study at Arsho medical laboratories in Addis Ababa. Every woman who came there for cervical cancer screening between 1 May and 30 June 2020 was asked to participate in a questionnaire-based, face-to-face interview about their socio-demographic background, cervical cancer screening experience and self-initiation of screening. A total of 274 women participated in the interviews. We further assessed the reproductive status of the patients, their risk factors for cervical cancer, source of information about the screening and barriers to cervical cancer screening. Results: The ages of the participants ranged between 20–49 years. The majority (over 70%) were married. A total of 37.6% reported self-initiating the screening. More than three-quarters of all interviewed women reported mostly using the private health care sector for all kinds of health services. Conclusions: While the Ethiopian government efforts on scaling up cervical cancer screening focus mainly on public health facilities, the private sector often does not get as much attention from policy makers. Efforts should be made to extend the government’s interest in cervical cancer screening and implementation research to the private healthcare sector.
Associate Professor
Addis Ababa University · Epidemiology and Biostatistics