Yonsei University · Medicine
Professor Eric Osei's research lab focuses on infectious disease epidemiology, with a primary emphasis on tuberculosis (TB), hepatitis B virus (HBV), HIV co-infection, and breast cancer awareness and screening. The lab investigates patient and health system delays in disease detection and management, evaluates the impact of co-morbidities on treatment outcomes, and promotes health education, screening, and vaccination initiatives—particularly within university and community settings in Ghana. The research also emphasizes health system strengthening, public health policy development, and community engagement to reduce disease burden and improve health outcomes.
Figures are computed from collected data and may differ slightly.
There is a considerable delay in TB case detection mainly due to patients delay in seeking healthcare. The factors associated with patients' delay include lack of medical insurance, perceived stigma, and making multiple healthcare encounters. Health system strengthening towards decentralizing TB diagnosis and management, raising public awareness about the disease, training of healthcare providers, and collaborating with non-formal healthcare providers may reduce long delays in the management of
This study demonstrated moderate awareness of the modalities of breast cancer screening and the risk factors of breast cancer among the students. However, there exists a gap between awareness and practice of breast cancer screening, which was influenced by optimism in breast cancer risk perception and religion. Awareness campaigns and education should be intensified in the University to bridge this gap.
TB/HIV co-infection rate in five study districts of the Volta region is quite high, occurs more frequently in female patients than males; among smear negative pulmonary TB patients, and children <15 years of age. Findings also demonstrate that HIV co-infection affects TB treatment outcomes adversely. Strengthening the TB/HIV collaborative efforts is required in order to reduce the burden of co-infection in patients.
This study highlights the urgent need for continued health education on HBV infection and strategies that ensure that health trainees are screened and fully vaccinated against the infection to prevent potential future exposure to the virus. The students' representative council can organize free HBV testing and vaccination for all fresh students.
The findings suggest that the study region is of intermediate to high endemicity with hepatitis B infection. Generally, females are more likely to be HBsAg positive than males. Planning more extensive screening and vaccination campaigns and educational programmes would help reduce the transmission of the infection among the general population.
Over the past five years, TB case notification and successful treatment outcomes did not significantly improve. Wide district variations in CNR was observed. The overall treatment success rate observed in this study is below the target of > 90% set by the World Health Organization's (WHO) end TB strategy. Additionally, patients who returned to continue treatment after interruption and those who were co-infected with HIV strongly predict unsuccessful treatment outcomes. Sustained interventions to
TB case detection rate was low and remained stable during the study period, whereas co-infection with HIV and mortality rates were quite high, indicating the need for feasible strategies such as active case finding to improve case detection, and improved case management to reduce mortality.
Effective vaccine management knowledge and practices are poor at Tonlon district and calls for urgent and pragmatic approaches such as training and re-training of vaccine users at all levels.
This study showed that female university students tend to estimate their breast cancer risk based on their experience of breast cancer. Students who have ever screened for breast cancer and those with the intention to perform breast self-examination in the future are more likely to perceive themselves as being at risk and thus take action to avoid getting breast cancer.
Historically, infectious diseases have generated fears among populations. Unhealthy handling of these fears result in the stigma and discrimination of infected patients. Globally, measures taken so far by governments to curb the spread of the novel coronavirus disease-2019 (COVID-19) pandemic, although helpful, have created fears in people. Consequently, there are reported Ghanaian media cases of stigmatisation against persons who were infected and recovered from COVID-19. However, these reports
Health facility delivery was persistently high in the Bolgatanga Municipality with birth peaking in May, September and October. Despite the rising rate of caesarean section, stillbirth rate did not significantly improved over the years. A prospective study may reveal the reasons for the increasing caesarean section rate. Additionally, understanding the factors that affect the decreasing trends of low birth weight in the municipality is crucial to public health policy makers in Ghana.
This study demonstrated that the COVID-19 pandemic negatively impacted TB case notifications and HIV testing and counselling services, However, ART initiation was generally not impacted during the first year of the pandemic. Proactive approaches aimed at actively finding the thousands of individuals with TB who were missed in 2020 and increasing HIV testing and counselling and subsequent treatment initiations should be prioritised.
Ghana amended its abortion law to permit abortion under certain circumstances due to the impacts of unsafe abortion. Even though the abortion law in Ghana is liberal, most women do not utilize the services. Studies have shown that lack of knowledge and attitude towards abortion laws are the barriers deterring women from using safe abortion services. This study, therefore, assessed the knowledge and attitudes of future female health professionals towards Ghana's abortion law. This was an institut
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