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16 August 2021 | Story Dr Cindé Greyling | Photo Supplied
Dr Samantha Potgieter – in the front line of the fight against COVID-19 .


Dr Samantha Potgieter is an infectious disease expert at the Universitas Academic Hospital and affiliated Lecturer in the Department of Internal Medicine at the University of the Free State (UFS). She was also the first health-care worker to receive the Johnson & Johnson vaccine in the Free State. Prior to the COVID-19 pandemic, her main focus was on complicated HIV and drug-resistant TB as well as hospital-acquired infections. Since the emergence of COVID-19, she has been managing the COVID-19 clinical response at Universitas.

What is the best thing about your job?
I work in an amazing team with colleagues who, after 14 years, I can say have become friends.

What is the best and worst decision you have ever made?
Marrying the person that I did is by far the best decision I have ever made. And I must be honest, I regret very few of my decisions. Even the bad ones have turned out to be learning opportunities.

What was/is the biggest challenge of your career?
Navigating the COVID-19 pandemic as an infectious disease physician was by far the biggest challenge of my career. It was an equally fascinating learning curve and an immense privilege to be in a position to contribute.

What does the word woman mean to you?
The word woman means a million different things. We are daughters, wives, mothers, sisters, and friends. We are strong when we need to be and yet vulnerable with those we love. We can be powerful but kind. I love being a woman.

Which woman inspires you, and why?
My mom. She is hands down the kindest person I know. Her quiet strength and her grace – she is everything I strive to be.

What advice would you give to the 15-year-old you?
I spent a lot of time wondering what life is all about, and I still don’t have the answers. But I think I would tell the 15-year-old me to remember that life doesn’t have to be perfect or easy in order to be good.

What is the one self-care thing that you do? 
Cuddling my little ones – it’s my very favourite thing to do.

What makes you a woman of quality, impact, and care?
I am a woman, and I think all women are these things. We all have the capacity to care for those around us and to change our small corner of the earth for the better.
 
I cannot live without … my tribe of sisters, they make me laugh, they hold me up.
My secret weapon is … an early start to the day.
I always have … an extremely messy car (it’s really not my fault)
I will never … buy a pressure cooker – a good friend has put the fear of life into me!
I hope … that my daughter will grow up in a world where she will also be able to say that she loves being a woman.

News Archive

Harvard couple to present lectures on Biostatistics and Mathematics at the UFS
2015-12-07


Professor Donald Rubin

Prof Donald Rubin (John L. Loeb Professor of Statistics at Harvard University) and Elizabeth Zell (MStat - mathematical statistician in the Division of Bacterial Diseases) will visit the University of the Free State (UFS) where they will present lectures on their respective work.

Over his prestigious academic career, Prof Don Rubin’s 400 publications and 13 books have earned him around 180 000 citations at an h-index of 113. He is one of the most cited statisticians/mathematicians/economists/psychologists in the world over the last 10 -15 years. He has supervised 35 PhD candidates as sole-supervisor, 17 more as co-supervisor, with a further eight in the pipeline.

Prof Rubin who will meet with UFS academics in the Department of Mathematics and Actuarial Sciences will also deliver a lecture: Rerandomisation to improve covariate balance in experiments.

Randomised experiments are the “gold standard” for estimating causal effects, yet in practice, chance imbalances often exist in covariate distributions between treatment groups. If covariate data are available before units are exposed to treatments, these chance imbalances can be mitigated by first checking covariate balance before the physical experiment takes place. Provided a precise definition of imbalance has been specified in advance, unbalanced randomisations can be discarded, followed by a rerandomisation. This process can continue until a randomisation yielding balance according to the definition is achieved. By improving covariate balance, rerandomisation provides more precise and trustworthy estimates of treatment effects.

Prof Rubin received an honorary professorship from the Faculty of Natural and Agricultural Sciences at the UFS.


Elizabeth Zell

The lecture will take place on:
Date: Tuesday 8 December 2015
Time: 16:00
Venue: Albert Wessels Auditorium, Bloemfontein Campus

Zell earned her Master’s degree in Statistics at North Carolina State University, and for more than two decades, was an active bio-statistical researcher in various offices of the Centers for Disease Control (CDC). Since 2013, she has been the Principal Statistician and President of Stat-Epi Associates, Inc. Her 150+ publications have earned her 14 500 citations at an h-index of over 50. She is a Fellow of the American Statistical Association, and, in 2010, she received the Statistics Section Government Award for outstanding contributions to statistics and public health by the American Public Health Association. During her career at the CDC, she earned more than 20 CDC research awards and honours.

She will deliver two lectures at the UFS. The first is entitled A Potential Outcomes Approach to Documenting the Public Health Impact of the Introduction of PCV13 for the Prevention of Invasive Pneumococcal Disease. The topic of her second lecture is: Assessing the Effectiveness of Intrapartum Antibiotic Prophylaxis for Prevention of Early-Onset Group B Streptococcus Disease through Propensity Score Design

Elizabeth’s lectures will take place on:
Date: Wednesday 9 December 2015
Time: 10:45 and 13:00
Venue: West Block 111, Bloemfontein Campus

For more information, please contact Dr Michael von Maltitz at VMaltitzMJ@ufs.ac.za.

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