How I identified Covid-19 variant in a week: KZN virus hunter
The SA virus hunter who identified the new variant of Covid-19 driving the country's second wave of infections has told the dramatic story behind his discovery.
Speaking to CNN, Prof Tulio de Oliveira, from the University of KwaZulu-Natal, said Eastern Cape doctors started telling him in mid-November that they were seeing a sudden and “shocking” explosion in Covid-19 cases.
Within a week, the director of the KZN Research Innovation and Sequencing Platform (Krisp) had genetically sequenced 16 samples from his home province and its southern neighbour and found they all had an unusual number of similar mutations.
“I said to myself, there's something very strange here,” said De Oliveira, who then asked for help from labs in SA's Network for Genomic Surveillance.
Stellenbosch University medical virologist Prof Susan Engelbrecht told him she would be shocked if the new variant had reached her area - but 58 out of 67 samples tested there proved her wrong.
On December 4, CNN reported, De Oliveira told the World Health Organisation SARS-CoV-2 virus evolution working group about the new variant and asked members to look for similar mutations.
The first to succeed was Andrew Rambaut, a professor at the University of Edinburgh in the UK, who published his findings on December 20.
SA's second wave of Covid-19 got under way at the beginning of December, when there were 38,124 active cases. By January 6, this had risen by almost 400% to 188,984.
The number of deaths has grown by 45% in the same 37-day period, which accounts for almost one-third of the deaths in the 300 days since SA's first case was confirmed on March 5 2020.
The Medical Research Council reported on Wednesday that the 16,532 deaths reported in the Christmas week were a new all-time record.
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