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21 April 2023 | Story Andre Damons | Photo Charl Devenish
Dr Emms
Dr Ayodeji Emmanuel Ogunbayo (right), who graduated this week with a Doctor of Philosophy degree with specialisation in Medical Virology, with his proud supervisor Prof Martin Nyaga, Associate Professor in the UFS Next Generation Sequencing (UFS-NGS).

With respiratory diseases contributing to the highest morbidity and mortality rate in children, and the vast majority of disease aetiology remaining undiagnosed in clinical settings, Dr Ayodeji Emmanuel Ogunbayo hopes his research for his PhD in Medical Virology will help to reduce mortality in children with respiratory infection.

Dr Ogunbayo, commonly known as Dr Emms by his peers, graduated on Thursday (20 April 2023) with a Doctor of Philosophy degree with specialisation in Medical Virology at the University of the Free State (UFS) Faculty of Health Sciences graduation ceremony. The title of his thesis was Metagenomics of the respiratory RNA virome of children in the Free State. His supervisor was Prof Martin Nyaga, Associate Professor in the UFS Next Generation Sequencing (UFS-NGS) and Director of the WHO Collaborating Centre (WHO CC).

“While clinical metagenomics next-generation sequencing (mNGS), which is an upcoming method, has the potential to revolutionise infection diagnosis and management in children, there is a dearth of information on its clinical applicability in Africa. This is the knowledge that guided the inception of this research,” says Dr Ogunbayo.

Project came at the right time

He commenced with his PhD in Medical Virology in 2019, which was centred on the applicability of mNGS in severe acute respiratory infection (SARI) in children and deciphering the children’s respiratory virome in health and disease, a project which was the first of its kind in Africa.

According to him, the project was conceived before the COVID-19 pandemic, however, despite the challenges encountered due to lockdown measures, the project came at the right time as it was able to address several profound effects of the pandemic such as COVID-19 on the dynamics of transmission of respiratory viruses and ultimately its effect on children’s health. During his PhD study, he published four manuscripts in highly reputable journals including the most recent one which was accepted in Journal of Medical Virology (JMV)  an impressive impact factor of 20.693.

The findings from this study included a validated and robust workflow to recover respiratory RNA viruses from clinical samples, according to the graduation programme. The established workflow was adapted to decipher children’s respiratory virome composition in health and disease, with a degree of heterogeneity, while simultaneously establishing the clinical diagnostic applicability of mNGS and, more importantly, the increased utility of dual-triple mNGS analysis tools in robust detection of viral pathogens in SARI.

His hope for the research

Dr Ogunbayo says: “This research generated vast pioneering information and data in Africa that could guide and influence policy in the adoption of clinical metagenomics, especially in cases where conventional methods of diagnosis yielded no results. Hopefully, this could lessen mortality due to respiratory infection in children.

Before studying in the field of medical Microbiology and Virology, he wanted to be a psychiatric nurse, but instead chose his current field of study because of his interest in the microbial world and pathology.

“It’s a feeling one cannot really put into words. A part of me feels like it is a ‘dream come true’ and another part of me feels like ‘this is a milestone achieved, but it’s just a stepping stone to further milestones to be achieved’.

“What is next is for me to dive into the world of policy-influencing research, give back to the academic community through student supervision, and work on my journey to becoming an emerging researcher. This is the reason I have taken a postdoctoral position at the UFS-NGS Unit under the mentorship of Prof Martin Nyaga.”

Prof Nyaga says: “Looking back at Emmanuel’s doctoral journey, it brought out the best in him in every aspect of the study. Longitudinal studies are hectic in the sampling phase, and all the ethical clearances that a study must achieve prior to beginning the sampling and the laboratory work can be very frustrating. Soon after his study was approved, the pandemic lockdown level 5 rules were applied, which meant he had to pause on the study. However, his focus, positive mindset and his ability to work in close consultation with his supervisor enabled him to finish this study in the best way possible. I am very proud of him.”

News Archive

Inaugural lecture: Prof André Pelser
2004-06-04

Tendencies and changes in the South African population structure in future decades.

Within the next five years South Africa will for the first time in the past century enter a period where the death rate will exceed the birth rate, largely due to the impact of HIV / AIDS.

According to sociologist Prof André Pelser, sociologist at the of the University of the Free State’s (UFS) Department of Sociology, the death rate exceeding the birthrate is only one of three demographic trends which will fundamentally change South Africa’s population structure in the following decades.

He was speaking at the UFS in Bloemfontein during his inaugural lecture as professor this week.

Prof Pelser said that according to some models the South African population will decrease within the next five decades by between 10 and 26 percent.

A second important trend which will impact on the population structure is the progressive ageing of the population.

He said the group above 65 years is the only age category in the South African population which will witness sharp increases in the next few decades.

In the next 50 years, the group younger than 15 years will reflect a decrease of 39% and those older than 65 years in South Africa will increase by approximately 110% in the next two decades.

“The systematic “greying” of the South African population will create the same economic and welfare issues as those with which governments in some more developed countries are already grappling,” said Prof Pelser.

A third trend affecting the South African population structure is the constant decrease in life expectancy.

Life expectancy at birth for the total population is projected to decrease from approximately 62 years at the beginning of the 1990’s to 43 years in 2015-2020, with sharp differences between the various population groups.

These tendencies and changes to the South African population structure have serious implications, he said.

For example, he said, the reduction in life expectancy could compromise national development objectives.

“It is estimated that more than a quarter of the economically active population will be infected with HIV by 2006,” said Prof Pelser.

The increase in the population, in age category 65, will place a financial burden on government and the economically active sector.

“Especially worrying is the fact that ever-increasing proportions of the state budget will be allocated to health and welfare services and this at the expense of other priorities like education, infrastructure, criminal justice system and trade and industry, to name but a few,” he said

“A comprehensive and integrated strategy is thus vitally important in addressing the overarching issues caused by changes in the population structure,” said Prof Pelser.

 

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