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11 August 2021 | Story André Damons | Photo Anja Aucamp
Prof Felicity Burt from the University of the Free State (UFS) and the National Health Laboratory Services (NHLS) holds an NRF-DST South African Research Chair in Vector-borne and Zoonotic Pathogens Research. She is also an expert on arbovirology in the UFS Division of Virology.

New variants of severe acute respiratory coronavirus 2 (SARS-CoV-2) have the potential to influence the size and duration of waves of infection and may prolong the duration of COVID-19’s stay with us. Despite the development of vaccines and the technology available to adapt vaccines in the future to address the emergence of new variants, it is extremely unlikely that COVID-19 will ever be eradicated.

The emergence of new variants has illustrated the importance of continually monitoring circulating variants for changes in viral proteins associated with cell binding (in other words, influencing entry of the virus into a cell) and immune responses (which would influence vaccine efficacy and reinfections). 

Prof Felicity Burt from the University of the Free State (UFS) and the National Health Laboratory Services (NHLS), who holds an NRF-DST South African Research Chair in Vector-borne and Zoonotic Pathogens Research, says the current vaccines are effective against severe disease, but do not prevent transmission. Hence, complete eradication of the virus is unlikely, as the virus will continue to circulate at low levels in the population even if high levels of vaccine coverage are achieved.  Prof Burt is also an expert on arbovirology in the UFS Division of Virology

“To date, the only pathogen that has been eradicated globally is the smallpox virus. This was achievable because of a highly efficacious vaccine and because smallpox caused a disease that was readily recognisable, enabling rapid isolation of afflicted patients. In contrast, a virus such as SARS-CoV-2 that can cause asymptomatic infections in which the person is unknowingly infected and able to shed and transmit the virus, is probably impossible to eradicate,” explains Prof Burt.  

Development of affordable treatment options remains important 

The current vaccines are, however, able to reduce the severity of the disease until a vaccine is available that prevents complete transmission of SARS-CoV-2; therefore, the development of affordable treatment options remains important. Novel therapeutics, such as an antiviral drug that interrupts replication of the virus, or monoclonal antibodies that neutralise the virus, would go a long way to contribute to the treatment of infections.  

“Currently, monoclonal antibody therapy is available in higher-income countries. Monoclonal antibodies mimic our natural antibody response, targeting specific regions of the virus, neutralising the virus, and stopping it from entering cells. Monoclonal antibodies have been used to treat other viral infections such as Ebola; however, they have significant limitations due to cost, availability, and high specificity, meaning that mutations in emerging variants could influence their efficacy. They are unlikely to be an affordable option in lower-income countries.”

Mutations become problematic

According to Prof Burt, viruses have a propensity to acquire mutations, or changes, in their genetic make-up during replication, and as expected, this virus has changed during the pandemic and will inevitably continue to mutate.

“These mutations become problematic if they influence the way the virus is transmitted between people, or if the disease profile changes and the virus causes a more severe disease, or if the changes result in a virus that is not recognised by the body's immune response.  In other words, the virus is capable of hiding from, or can escape, the immune response that a person has developed as a result of a previous natural infection or from vaccination. 

“If the virus has changed such that an existing immune response does not recognise it, then a person can become reinfected. Hence, changes in the ability to escape immunity are considered to confer an advantage to the virus. Although there are changes in all regions of the viral genes, we are concerned with changes that occur in the gene that codes for the spike protein. This protein is responsible for binding and entry of the virus into cells, hence changes in the spike protein that allow the virus to more readily enter cells are considered to be an advantage to the virus.” 

Variants of interest vs variants of concern

Prof Burt says there is now some evidence suggesting that antibodies produced in response to the Beta variant – the dominant variant during the second wave in South Africa – are less efficient at neutralising the Delta variant of the virus. In addition, there is evidence suggesting that the Delta virus can replicate to higher levels in the body, resulting in a higher viral load. Although the kinetics of each variant are still not completely understood, the combinations of higher viral load, and the potential for reinfections to occur will likely contribute towards a larger wave of infection.

“The World Health Organisation (WHO) and international partners characterise emerging variants as variants of concern (VOC) or variants of interest (VOI). Although there are multiple new variants globally, only a small proportion of these meet the definition. The Lambda variant, initially recognised in South America, is deemed a VOI. This is a level below VOC, indicating that it has mutations that are known or have the potential to affect the characteristics of the virus and that the prevalence is increasing in multiple countries over time. Currently, Lambda is not a concern in SA. In contrast, a VOC has the same characteristics as a VOI, but in addition, has one or more of the following: increased transmissibility or is associated with change in disease severity or clinical presentation, or the public health and social measures are less effective against the variant,” says Prof Burt.  

Vaccines will likely need to be adapted to accommodate future variants 

It is impossible to predict which variants may emerge next, explains Prof Burt. “Fortunately, although the current vaccines may not prevent mild disease, they have all been shown to reduce the incidence of severe disease and fatalities. The technology for adapting vaccines is available – but of course – if a vaccine has to be adapted, it will take some time for that to be available. As this virus is now well established globally and will continue to evolve over the years, it is likely that, in the future, vaccines will be required to be adapted to accommodate circulating variants.”

“Although there is some reduction in vaccine efficacy against the currently circulating variants, there are fortunately high levels of protection against severe disease and hospitalisation in people who have received the single-dose Johnson & Johnson vaccine or both doses of the Pfizer vaccine. In other words, they are fully vaccinated,” says Prof Burt. 

Despite reduced effectiveness and potential for vaccine breakthrough, it is still important for people to be vaccinated, as it reduces viral load and duration of virus shedding. Less viral replication means that the virus has less chance to mutate, with less chance of new variants emerging.   

News Archive

Centenary medals awarded
2004-10-15

Speech, Rector and Vice-Chancellor: Prof. Frederick Fourie

Op 28 Januarie 2004 het ons die honderdste herdenking van die geboorte van hier­die hoër onderwys instelling gevier met ‘n groot partytjie voor die Hoofgebou. Dit was ‘n wonderlike en vreugdevolle aand.

Die historiese prosessie tydens die amptelike opening van 6 Februarie 2004, in kleurvolle akademiese togas, vanaf ons wortels in Grey-Kollege tot by die Hoof­gebou, het die reistog vanaf die verlede na die hede treffend ge­simbo­liseer.

Talle ander eeufeesgeleenthede het gedurende hierdie jaar plaasgevind. Woensdagaand het ons die premiêre van ‘n dokumentêre film oor koning Moshoeshoe beleef – ‘n belangrike eeufeesprojek van die UV wat onder meer gemik is op die ontwikkeling van ‘ n gedeede geskiedenisbesef – a shared sense of history – and the celebration of a very special leadership, of a spirit of nation-building and reconciliation, in somebody like king Moshoeshoe (also MT Steyn and others…)

Last night we experienced a wonderful and moving honorary doctorary ceremony, with a wonderful group of South Africans like Khotso Mokhele, Antjie Krog, Jakes Gerwel, Van Zyl Slabbert, Jaap Steyn, Saleem Badat, and others - giving so much food for thought.

This evening, where we honour outstanding contributors to the development of this University, is a suitable moment to reflect on the course of the first 100 years of the University of the Free State.

1. ‘n Voëlvlug oor die geskiedenis: die vyf fases

1.1 Eerste fase: 1904 – 1927 (Eerste kwarteeu)

Eerste wankelende treë in die totstandkoming van die
Grey Universiteitskollege

Gedurende 1904 – 1920 word die eerste en mees basiese vakke in geestes- en natuurweten­skappe ingestel, eerste Senaat en eerste Raad saamgestel, en eerste geboue opgerig (hoofgebou en manskoshuis). Teen 1920 was daar egter slegs ongeveer 100 studente, die instelling was finansieel in die knyp, met geen vooruitgang en groei, en ook nie ‘n vaste rektor nie – klaar­blyk­lik was die GUK nog geen lewensvatbare instelling nie. Vrystaatse kinders word steeds eerder na ander universiteite gestuur.

Hierna maak ds JD Kestell, rektor 1920 – 1927, ‘n reuse bydrae om ‘n versukkelde, arm, klein universiteitskollege lewensvatbaat te kry. Hy slaag met fonds­insameling en oortuig Afrikaanse én Engelse ouers om hulle kinders na die GUK te stuur. Teen 1927, met 420 studente, word die eerste nederige mylpale van kritiese massa bereik te midde van ‘n steeds armoedige Vrystaat­se gemeenskap en ‘n studentekorps met gelapte klere. [Maar ook die tyd waarin die Reitz-saal, waarin hierdie plegtigheid plaasvind, gebou is.]

1.2 Second phase: 1927 – 1950 (Tweede kwarteeu)

The Grey University College becomes a fully fledged university

By 1950 the establishment of main basic and career-oriented faculties were completed – Faculty of Commerce in 1937; Faculty of Law as wel as the Faculty of Education in 1945. Student numbers reached 1000 in 1950.

Die UKOVS beleef en oorleef die Groot Depressie, die armblankevraagstuk, die Tweede Wêreldoorlog, taal- en politieke stryd onder Afrikaners, en die stryd van Nat vs Sap, ook op die kampus. Die tydperk word veral gestempel deur die taalstryd met DF Malherbe (rektor 1929 – 1934) as sterk kampvegter vir Afrikaans. Veral na 1948 volg rektor Van der Merwe Scholtz ‘n doelbewuste enkel­talige Afrikaanse rigting (Christelik-nasionaal).

1.3 Derde fase: 1950 – 1976 (Derde kwarteeu)

Ongekompliseerde groei ná onafhanklikheid

Hierdie periode word gestempel deur verkryging van onafhanklikheid as universiteit op 18 Maart 1950. Daarna beleef die UOVS onder rektore Scholtz, Flippie Groene­woud en Benedictus Kok stelselmatige groei sonder beduidende finansiële kommer. Die UV is duidelik ‘n Afrikaanse ‘volksuniversiteit’ op Christelik-nasionale grondslag, onlosmaaklik in­gebed in die dominante politieke bedeling van apartheid en afsonder­like ontwikke­ling. Dit is die hooggety van Afrikaner (en blanke) self­vertroue en heerskappy. Vir personeel sowel as studente is dit ‘n relatief onge­kom­­pliseerde tyd getipeer deur groeiende voor­spoed in die blanke en Afrikaanse gemeenskap, goeie werksvooruitsigte vir studente, kommer­lose studentepret, en min spanning op die kampus.

The academic focus is on teaching, especially to provide staff for the growing public service and education sectors. Research has a low profile. More career-oriented or professional faculties are established: agriculture in 1958 and the medical faculty in 1970. Student numbers reach 2000 in 1960, 4000 in 1970 en 7000 in 1975. Many new residences and academic buildings are erected, especially in the Kok-era.

Teen 1976 was die vernaamste boustene van ‘n medium-grootte universiteit in posisie: onafhanklikheid, genoeg fakulteite, genoeg koshuise en akademiese geboue, goeie sport en kultuur. Op die oog af is die ideaal van volwaardige, onaf­hanklike universiteit verwesenlik.

1.4 Vierde fase: 1976 – 1989

Op koers na die jaar 2000: van die statiese na vernuwing

Politieke onstabiliteit en oorgang in die land begin met die Soweto-onluste, die drie-kamer parlement, PW Botha se Rubicon-toespraak, noodtoestande, die ‘struggle’ en opkoms van UDF, en so meer. Die UOVS is swaar onder die indruk van die ‘totale aanslag’ en die regering se totale teen-strategie. Die Universiteit word polities en akade­mies geïsoleer en intellektueel gemarginaliseer. Ekonomies is dit moeiliker tye na die oliekrisis en die begin van hoë inflasie, en die Staat se finansies wat begin knyp.

Academically this period is distinguished by the strong stimulation and support of the research capacity and orientation by rector Wynand Mouton, which leads to a significant growth in research, especially in the natural sciences. The faculty of Theology is establishyed, the Sasol-UFS library erected. Student numbers continue to grow, but at a much slower rate then before.

Twee ander fasette kenmerk hierdie tydperk: eerstens die toelating van die eerste swart studente (nagraadse 1978, voorgraads 1988) en die begin van die era van multikulturaliteit; tweedens, die begin van subsidie- en finansiële probleme en die eerste rasionalisasie van personeel. Albei hierdie is voortekens van ingewikkelde jare wat sou volg vanaf 1990.

1.5 Fifth phase: 1990 – 2004: The turn of the century brings winds of change

(a) 1990 – 1996:

Die Francois Retief era word gedomineer deur die gevolge van die politieke verande­ringe deur president FW de Klerk en die vrylating van Nelson Mandela. Die UV ontwaak tot die realiteit van die oorgang na ‘n post-apartheid samelewing en komende ANC regering. Die eerste versigtige trans­for­ma­sie­stappe word ingestel, multikulturaliteit word die groot uitdaging, en die eerste fasiliterende strukture (bv. die Multikulturele Komitee) word gevestig. Die eerste senior swart personeel word aangestel.

The dramatic decision about the introduction of parallel-medium teaching in 1993 signals the start of multilingualism as well as a significant growth in the admission of black students. Total student numbers are stable at approximately 9000, but black student numbers grow to 36% in 1995. Initially the change to parallel-medium impact negatively on staff teaching load and hence onresearch outputs.

Die inkrimping in staatsubsidie lei tot ernstige finansiële probleme, besparings­pogings, grootskaalse rasionalisasie van personeel in veral die fakulteit Lettere en Wysbegeerte, spanning tussen Senaat en rektoraat oor finansies – en mismoedig­heid onder personeel.

(b) 1997 – 2004:

The time of rector Stef Coetzee and his successor is the era of the new democracy and transformation. At the beginning of this phase Afrikaans parents start sending their children to other Afrikaans universities; residence become half full. Tensions arise between student groups. This is followed by the large breakthroughs in student transformation in 1997, which normalises the situation. The University becomes a leader in transformation. This leads to the acceptance of the multicultural and multilingual character, on a Christian foundation, of the University. The name changes to the University of the Free State (UFS).

Met ‘n finansiële krisis en verdere rasionalisasie van personeel op hande word die akade­miese en finansiële ‘draaistrategie’ in Januarie 2000 geloods. ‘n Drama­tiese finansiële ommekeer lei tot herinvestering in kampus­fasiliteite en toerusting, ‘n toename in personeel en beduidende verhoging in vergoeding bokant inflasie. Terselfdertyd is daar ‘n opbloei in die akademie: innoverende onderrig­programme, e-leer, ‘n fokus op programgehalte. Konsolidering van fakulteite vind plaas, die Bestuurskool word gestig, daar is sterk internasio­na­lisering en groei in navorsing. Profes­sionele bemarking en strategiese kommunikasie verander die beeld van die UV.

Studentegetalle groei dramaties van 10 000 in 2000 na meer as
23 000 in 2003/4; groei moet nou beperk word. Afrikaanse studente keer terug; koshuise kry lang waglyste. Die verhou­ding tussen wit en swart studente op die hoofkampus is rondom 50:50.

The period ends with the incorporation of the Qwaqwa en Vista Bloemfontein campuses, the approval of a new language policy which also established multilingualism in management and administration, and purposeful efforts to consolidate the foundations of an institutional culture of multiculturalism, multilingualism, non-racialism and non-sexism – a culture of tolerance, embracement and justice in diversity. The Centenary is celebrated with harmony and prosperity on the campus in 2004 (although always with a good sprinkling of unexpected challenges and problems).

2. Vanaand bring ons hulde, en sê ons dankie aan, die bouers van die UV

Oor ‘n honderd jaar het honderde, duisende mense ‘n bydrae gelewer tot die UV se ontwikkeling.

Kom ons eer en dank diegene wat, 100 jaar gelede in a baie arm gemeen­skap wat bykans verwoes is deur die Anglo-Boere oorlog, nooit opgehou droom het oor ‘n eie universiteit om die jongmense te dien, om die mense te dien – die arm Vrystaatse mense van daardie tyd.

Let us honour and thank all those who painstaking built this university from very humble beginnings, from the first fragments and embrio of a university – through a hundred years of various wars, of the struggle, of poverty, of bad times but also good times.

In elke dekade, in elke een van die honderd jaar, is hierdie instelling gebou deur die harde werk, idealisme en verbintenis (“commitment”) van leiers, akademiese personeel, steundiens­personeel, dienswerkers. Laat ons hulle eer en dank.

Let us honour the spirit of commitment and ‘vasbyt’, of ‘never let go’, the determination to overcome obstacles, of timely and pre-emptive adjustment to new challenges and new needs, which made that possible.

Kom ons vier en eer die duisende studente wat in die 100 jaar hier was, wat die spesiale tradisies en spesiale gees geskep het van Kovsiekampus, van Kovsie studentelewe – en wat gedurig nuwe tradisies en gebruike geskep (en gepleeg) het, soos net studente dit kan doen.

Let us celebrate the way this University has, in the last 20 years, once again taken up the challenge of transformation and adjusting to new needs, serving all the people, especially those most in need at this time of our history – thereby closing the circle, going fully “from post Anglo-Boer War to Post-Apartheid”.

Kom ons vier, en wees innig dankbaar vir, die wyse waarop hierdie Universiteit in die laaste 5 jaar gedraai het, finansieel sowel as akademies, en die wonderlike periode van akademiese groei en ontwikkeling en verdieping waarin ons nou staan – tesame met die geleenthede wat QwaQwa en Vista Bfn vir ons bied. Hierdie voorspoed sien ons in die nuwe fisiese aangesig van die kampus, insluitend hierdie wonderlike Eeufeeskompleks.

Let us thank God, the Almighty, who has guided this university through a tumultuous century, for always being there for us, for blessing us in so many ways. In Deo Sapientiae Lux

* * *

So: vanaand is ons hier om erkenning te gee en dankie te sê…

Soveel mense het veel vroeër hul fondament-leggende bydraes gelewer, en alles wat ons vandag hier sien, moontlik gemaak. Selfs mense uit meer onlangse jare is reeds oorlede – enkeles terwyl hulle nog in diens van die UV was, ander na hul aftrede.

‘n Bepaalde groep was bevoorreg en geseend om in die laaste ongeveer 30 jaar by die UV betrokke te kon wees, én om vandag nog in die lewe te wees. Dit is van hulle wat vanaand hier is, en wat vanaand Eeufeesmedaljes ontvang.

Geweldige moeite is gedoen om hierdie proses van seleksie en keuring so billik en deeglik as moontlik te doen. Uiteraard is so ‘n proses nie volmaak nie en sal almal nie saamstem met die uitkomste van die proses nie. Groot moeite is egter gedoen in hierdie fase om mense nie verkeerdelik uit te laat uit of in te sluit in die toekenningslys nie, in volle bewustheid dat daar waarskynlik steeds foute gemaak sal word. Onvermydelik sal daar foute wees, of mense wat uitgelaat is. Ons vra daarvoor nederig om verskoning en begrip.

Billikheid, so ‘n belangrike rigsnoer vir hierdie Universiteit, veral in hierdie tye, lei ons ook dat ons oë oop is vir die bydraes vir mense uit alle afdelings van die Universiteit, wat lei tot ‘n bepaalde balans tussen fakulteite, tussen fakulteite en steundienste, tussen poskategorieë, tussen geslag en ras, en individue soveel as mense in spanverband.

In Deo Sapientiae Lux

God bless this university / Modimo o thlonolofatse yunivesithi ena

Khotso Pula Nala

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