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14 August 2020 | Story Andre Damons | Photo Supplied
Max du Preez, Editor: Vrye Weekblad (top left), was the facilitator was the facilitator for Thursday’s UFS Though-Leader webinar that included Prof Salim Abdool Karim, Director: Centre for the AIDS Programme of Research in South Africa (CAPRISA) and Chair: South African Ministerial Advisory Committee on COVID-19 (top right); Prof Glenda Gray, President and CEO: South African Medical Research Council (SAMRC) (bottom left); and Prof Felicity Burt from the UFS and NRF-DST South African Research Chair in Vector-borne and Zoonotic Pathogens Research (bottom right), participated in Thursday’s Though-Leader webinar.

Although the decline in COVID-19 cases is a promising sign for South Africa, there are concerns about a second surge, and the country should not become complacent.

This was the opinion of the three experts who took part in the first Thought-Leader webinar presented by the University of the Free State (UFS) on Thursday, 13 August. The 2020 UFS Thought-Leader Webinar Series, themed 'Post-COVID-19, Post-Crisis', is taking place in collaboration with Vrye Weekblad as part of the Vrystaat Literature Festival’s online initiative, VrySpraak-digitaal.

The panellists included top experts such as Prof Salim Abdool Karim, Director: Centre for the AIDS Programme of Research in South Africa (CAPRISA) and Chair: South African Ministerial Advisory Committee on COVID-19; Prof Glenda Gray, President and CEO: South African Medical Research Council (SAMRC); and the UFS’ Prof Felicity Burt, NRF-DST South African Research Chair in Vector-borne and Zoonotic Pathogens Research.
Prof Karim said the downward decline is consistent and the number of patients presenting at hospitals is also declining.
 
Promising trend of decline
“What we are seeing is a promising trend, and it looks like we are on the decline. A question that I am often asked is: Is the worst over? The answer is not clear-cut. We are concerned about the risk of a second surge. If anything – what really concerns me at this stage is a second surge, as I think about how the pandemic may play out over the next few weeks,” said Prof Karim. 

He also referred to countries such as the US, Spain, New Zealand, Vietnam, and South Korea, which are now facing a second surge. 

“We need to be very careful; this is not the time for complacency. We need to maintain all our efforts. If we look at one of the key drivers, it is the need for our economy to restart. We need to get people back to work,” said Prof Karim. 
According to him, we have to look at COVID-19 not as a sprint, but as a marathon. “As we learn to co-exist with this virus, aim for containment; we need to plan for the long term. Even if we get a vaccine, it is unlikely that we will be able to vaccinate a substantial part of our population before the end of next year.” 

“We need to transition from being scared to a situation where we can control our risk. When we know that we can control the risk and then influence the risk, we influence the risk of everyone around us. Part of the new normal is the strategy of mitigation with prevention, plus preventing outbreaks.”

Schools and vaccine development
Prof Gray spoke about whether schools should be open and the role that children play in transmission, how to avoid the second wave, how to adjust our testing, and the exciting news around vaccine development. 

As a paediatrician and a parent, Prof Gray said she believes schools should open. “Children have a different immune response to COVID-19. They have different immune responses to Coronavirus and they probably have less viral-load copies which makes them have milder diseases. They are lucky to have been spared from symptomatic or severe disease,” said Prof Gray. 

According to her, schools need to be de-risked as much as possible, with children and teachers wearing masks, washing hands, making sure that there is good ventilation in the school and that windows are wide open. 

“We also need to know about the comorbidity and ages of teachers, so that we can keep the sick and older teachers out of direct contact. The younger teachers with no comorbidities should be teaching. 

“We also know from our experiences with health workers that transmissions happen in the tearoom where teachers take off their masks and talk. We need to minimise the transmissions in tearooms and protect teachers and parents who are older and have comorbidities.”  

Prof Gray said from data she has seen, schools play a very small role in the transmission of COVID-19; a lot more (transmissions) happen in the community, by commuting, and overcrowded taxis.

Prof Gray agreed with Prof Karim that we should be concerned about a second wave, and that we need to make sure community transmissions are minimised. 

Regarding a vaccine, Prof Gray said a global race is on to find a vaccine. “The more vaccines the better, we want more vaccines to work. The more vaccines, the more affordable they are, and the more doses are available.”

One health approach

During her presentation, Prof Burt said the current response to outbreaks is largely reactive rather than proactive, and “if we have more of a one-health approach, with forecasting, early detection, and a more rapid response, we could have an impact on public health in the future”. 


News Archive

Fracking in the Karoo has advantages and disadvantages
2012-05-25

 

Dr Danie Vermeulen
Photo: Leatitia Pienaar
25 May 2012

Fracking for shale gas in the Karoo was laid bare during a public lecture by Dr Danie Vermeulen, Director of the Institute for Groundwater Studies (IGS). He shared facts, figures and research with his audience. No “yes” or “no” vote was cast. The audience was left to decide for itself.

The exploitation of shale gas in the pristine Karoo has probably been one of the most debated issues in South Africa since 2011.
 
Dr Vermeulen’s lecture, “The shale gas story in the Karoo: both sides of the coin”, was the first in a series presented by the Faculty of Natural and Agricultural Science under the theme “Sustainability”. Dr Vermeulen is a trained geo-hydrologist and geologist. He has been involved in fracking in South Africa since the debate started. He went on a study tour to the USA in 2011 to learn more about fracking and he visited the USA to further his investigation in May 2012.
 
Some of the information he shared, includes:

- It is estimated that South Africa has the fifth-largest shale-gas reserves in the world, following on China, the USA, Argentina and Mexico.
- Flow-back water is stored in sealed tanks and not in flow-back dams.
- Fracturing will not contaminate the water in an area, as the drilling of the wells will go far deeper than the groundwater aquifers. Every well has four steel casings – one within the other – with the gaps between them sealed with cement.
- More than a million hydraulic fracturing simulations took place in the USA without compromising fresh groundwater. The surface activities can cause problems because that is where man-made and managerial operations could cause pollution.
- Water use for shale-gas exploration is lower than for other kinds of energy, but the fact that the Karoo is an arid region makes the use of groundwater a sensitive issue. Dr Vermeulen highlighted this aspect as his major concern regarding shale-gas exploration.
- The cost to develop is a quarter of the cost for an oil well in the Gulf of Mexico.
- Dolerite intrusions in the Karoo are an unresearched concern. Dolerite is unique to the South African situation. Dolerite intrusion temperatures exceed 900 °C.

He also addressed the shale-gas footprint, well decommissioning and site reclamation, radio activity in the shale and the low possibility of seismic events.
 
Dr Vermeulen said South Africa is a net importer of energy. About 90% of its power supply is coal-based. For continued economic growth, South Africa needs a stable energy supply. It is also forecast that energy demand in South Africa is growing faster than the average global demand.
 
Unknowns to be addressed in research and exploration are the gas reserves and gas needs of South Africa. Do we have enough water? What will be the visual and social impact? Who must do the exploration?
 
“Only exploration will give us these answers,” Dr Vermeulen said.

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