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16 September 2021 | Story Nonsindiso Qwabe | Photo Supplied
Dr Samantha Potgieter.

As COVID-19 vaccines continue to be a topical issue in South Africa and indeed in the world itself, the Department of Human Resources held a webinar for the UFS community on 10 September that delved deeper into the questions surrounding the vaccine. 

Dr Samantha Potgieter, infectious disease expert at the Universitas Academic Hospital and affiliated Lecturer in the Department of Internal Medicine at the University of the Free State, addressed some commonly raised concerns about the COVID-19 vaccine and how it affects us.

Dr Potgieter started off by saying that coronaviruses have been causing outbreaks among humans for millennia. While COVID-19 is relatively mild and self-limiting in 80% of patients, 20% of patients are at risk of developing severe disease.
She said before a vaccine could be introduced to a population, it had to go through rigorous testing and clinical trials. Only once safety has been confirmed, it can be released and distributed. 

“This process usually takes about ten years; this is what we are used to. But it has happened much quicker for the COVID-19 vaccine, and I think this is a fact that many people misinterpret – that the evidence might not be that robust, which is certainly not the case. COVID-19 vaccines have gone through all this rigorous testing, thousands of patients had volunteered for trial testing studies. The point is that we already had the technology, vaccination is not something new to humans. So, these preclinical trials were able to happen very quickly, and because of the large number of infections and because the focus of the entire world was on finding a cure, it was a very set process to get these trials through the adequate phases.” 

She said the COVID-19 vaccine was approved by national regulators, manufactured to exacting standards, and only thereafter distributed – as is the case for all drugs released into the market.

How does the vaccine work?

Dr Potgieter said the vaccine works by producing antibodies against the COVID-19 virus. If you are infected with the COVID-19 virus after getting vaccinated, these antibodies bind to the virus and stop it from replicating.

“When you get infected with a disease such as COVID-19, natural antibodies are produced by the immune system to fight the disease. If you get infected again, the immune system will remember how to respond, and quickly destroy the virus. A vaccine can do the same, but without the risk of disease from natural infection. Vaccines work by imitating a bacteria or virus using either mRNA in the case of the COVID-19 vaccine, or a dead or weakened version of the bacteria or virus. The vaccine raises the body’s alarm. It trains the body to recognise and fight the virus. When the body encounters the real-deal virus, it is primed and ready to fight for the body’s health.”

She said South Africa had the mRNA vaccine in the form of the Pfizer vaccine, and the adenoviral vector vaccine in the form of the Johnson & Johnson vaccine.

Why should you get the vaccine?

Dr Potgieter said vaccines are safe and effective, and the most compelling reasons for getting vaccinated are the following:

-To protect yourself from severe disease
-To protect those around you who may be at risk of severe disease
-To restore the social and economic platforms of the country, and the world at large.
She said that while the vaccine does not prevent you from getting COVID-19, it offers better protection against the development of severe disease, and vaccinated people had 50% less chance of spreading the virus.
The most common side effects of the vaccine are the following:
-Pain at the injection site
-Swollen lymph nodes
-Fever
-Fatigue
-Headache
-Myalgia (muscle pain)

“These are indications that the immune system is mounting a response. When it mounts a response, it produces antibodies,” she said.

Answers to commonly asked questions are the following:

1. Can the vaccine alter my DNA?
“No, it goes nowhere near the nucleus of the cell.”

2. What happens when you get COVID in between the first and second doses?
“Some protection is conferred after the first dose, but maximum protection is conferred two weeks after the second dose. Vaccination is still advised.” 

Dr Potgieter said patients who were between vaccinations still show better recovery results than those without.

3. What about natural immunity?
“Natural immunity might confer better protection, but it runs the risk of severe disease. Yes, immunity can be gained through natural immunity, it can be gained through vaccination, and it can certainly be gained by a combination of the two.”

4. What about long-term side effects?
“Serious side effects that cause long-term health problems following any vaccination are very rare, including the COVID-19 vaccination.”

To get the answers to more of your questions, the webinar can be accessed via the following link: https://event.webinarjam.com/go/replay/43/053q6a8vay9a0qa2

News Archive

Three receive PhD degrees in Architecture at Winter Graduation ceremony
2015-07-08

Dr Hendrik Auret, Dr Gerhard Bosman and Dr Madelein Stoffberg.
Photo: Leonie Bolleurs

Three graduates from the University of the Free State’s (UFS) Department of Architecture received their PhD degrees at the 2015 Winter Graduation ceremony on the Bloemfontein Campus. According to Prof Walter Peters from Architecture, this is the first time in the history of the UFS that three PhD degrees in Architecture have been awarded simultaneously. It is country-wide a rare occurrence for three PhDs to be awarded in Architecture at one graduation ceremony.

“Previously, the UFS has only ever awarded a single PhD in Architecture, and that was in 1987, to Leon Roodt, a former head of the department. The first UFS honorary doctorate in Architecture was conferred on Gerard Moerdijk, architect of the Afrikaner church and the Voortrekker Monument. Gawie Fagan and Prof Bannie Britz, late head of the Department of Architecture, were other recipients of an honorary doctorate in Architecture,” said Prof Peters.

At the 2015 Winter Graduation ceremony, the UFS conferred PhDs in Architecture on Hendrik Auret from Roodt Architects in Bloemfontein as well as on Gerhard Bosman, and Madelein Stoffberg from the UFS Department of Architecture.

Dr Hendrik Auret

As an Architecture student at the university, Dr Auret obtained the degree BArchStud in 2004, a BArchStud (Hons) in 2005, and a March (Prof) in 2006, all cum laude. His Master’s design dissertation was judged the best from all South African Architecture learning sites, earning him the coveted ‘Corobrik Architectural Student of the Year’ award.

The work of the Norwegian architect and theorist, Christian Norberg-Schulz, served as the basis of Dr Auret’s PhD thesis, Care, place and architecture: a critical reading of Christian Norberg-Schulz’s architectural interpretation of Martin Heidegger’s philosophy, which considered the cogency of Norberg-Schulz’s architectural ‘translation’ of the German philosopher Heidegger’s thinking.

Dr Gerhard Bosman

On obtaining his BArchStud. and BArch degrees at the university in 1993 and 1995 respectively, Dr Bosman immediately joined the part-time staff of the Department of Architecture. As a lecturer in Building Construction, he developed an interest in vernacular and indigenous methods and techniques. Consequently, he built the first family home in Bloemfontein, for his wife, Debbie, and their two children, of earth construction, which been previously but erroneously considered inferior.

Despite that negative perception, Dr Bosman persuade the university to allow him to undertake post-graduate studies at the International Center for Earth Architecture (CRATerre-ENSAG) within the Ecole d' Architecture de Grenoble, France, from which institution,he was awarded the DPEA-Architecture de Terre qualification in 2000. In 2001,Dr Bosman was appointed to the full-time staff.

In 2003, when the opportunity arose, he became involved with SANPAD, the South Africa-Netherlands Research Project on Alternatives in Development, which lead ultimately to his PhD thesis: The acceptability of earth-constructed houses in central areas of South Africa.

Dr Madelein Stoffberg

In 2005, Dr Stoffberg enrolled as an Architecture student at the UFS, obtaining her BArchStud degree in 2007, the BArchStud (Hons) in 2008 and the March (Prof) in 2009, the latter cum laude. Immediately on graduating, Dr Stoffberg was appointed to her position as a part-time junior lecturer in the Department of Architecture.

During her studies, her attention was drawn to the concept of the spatial triad of Henri Lefebvre. Fascinated with the conceptand by the development of community centres as a contemporary architectural typology, she began her PhD degree.  

Entitled Lived reality, perception and architecture: two community centres interrogated through the lens of Lefebvre’s spatial triad, Dr Stoffberg investigated the relationship between the spatial understanding of the project architect and the community of two completed buildings in Port Elizabeth. She established a mismatch in perception, representation, and use of space, which could be bridged, however, by way of a qualitative research approach, instead of a quantitative one.


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