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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

Postgraduate School opens at UFS
2011-05-19

 
Prof. Maresi Nerad, from Washington university in Seattle, USA
Photo: Stephen Collett

We are celebrating the launch of our new Postgraduate School (PGS) on our Main Campus in Bloemfontein from 16 - 20 May 2011.

In line with national priorities for research-based postgraduate education and the focus of the UFS Academic Turnaround Strategy, the aims of the Postgraduate School are to:

  • improve the quality of postgraduate student research;
  • produce graduates who are global citizens, research literate and able to reflect ethically on the purpose, process and product of research;
  • improve throughput rates of postgraduate students; and
  • make the experience of being a postgraduate at the UFS one which is stimulating, enjoyable and which contributes to the development of the person beyond the limits of her or his discipline(s).

“We hope that the school will be a pleasant place to pursue research scholarship, discuss ideas and relax, and we look forward to welcoming postgraduates and other scholars to the school,” Prof. Neil Roos, Director of the UFS Postgraduate School said.

This significant event in the academic transformation of the university goes hand in hand with the inaugural lecture of Prof. Maresi Nerad. Prof. Nerad’s impressive CV reads amongst others that she has a M.A. (Political Science) at the Technical University of Darmstadt, Germany and a Ph.D. (Higher Education) at the University of California, Berkeley. She is also the founding director of the national Center for Innovation and Research Graduate Education (CIRGE).

As Professor Extraordinary in the UFS’s Postgraduate School, she is bringing more to the table than a world of wisdom and her passion for the postgraduate education. “I can contribute lessons learned from four distinct professional experiences, including 17 years of administrative and scholarly leadership in undertaking the conceptual and practical transformational work of organisational change at two US postgraduate schools, where I worked amongst others to improve the quality of mentoring, shorten the time to doctoral degree, and improve doctoral completion rates.”

She also brings to the UFS her experience as founding and current director of the first research center for studies on graduate education in the world. “It is our mission to discover how best to prepare Ph.D. students to be effective leaders in research and society,” she said.

Prof. Nerad says that she is committed to support and consult with the UFS Postgraduate School. She would particularly encourage the use of research to understand postgraduate education in all its dimensions at the UFS better and to use the evidence-based findings as a base for policy-making and resource allocation.

In reflecting on her vision for the UFS Postgraduate School, Prof. Nerad says that five years from now she hopes to see the UFS having strengthened its position as a major driving force in the national South African postgraduate-education community for internationalising postgraduate education. She is also confident that the UFS will supply increased numbers of skilled postgraduates who are “intellectual entrepreneurs and risk takers with a social consciousness, who have sustainability of the systems of the planet as a core value”.

“Five years from now the PSG will have taken the lead in preparing graduate students who are world citizens,” Prof. Nerad concluded.

 

Presentation on PhD students reveals more than meets the eye

British professor presents a discussion at UFS

Journey from student to scholar

Society will take care of interests

Female academics talk about joys and lessons

Research plus the internet equals the cyber scholar
 


 

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