A new coronavirus variant with multiple mutations has been detected in South Africa.
Scientists however said they were yet to establish whether it is more contagious or able to overcome the immunity provided by vaccines or prior infection.
The new variant, code named C.1.2, was first detected in May and has on top of spreading to most South African provinces, been reported in seven other countries in Africa, Europe, Asia and Oceania, according to research which is yet to be peer-reviewed.
South Africa was the first country to detect the Beta variant, one of only four labelled “of concern” by the World Health Organization (WHO).
It contains many mutations associated in other variants with increased transmissibility and reduced sensitivity to neutralising antibodies, but they occur in a different mix and scientists are not yet sure how they affect the behaviour of the virus. Laboratory tests are underway to establish how well the variant is neutralised by antibodies.
Reports have suggested that Beta spreads more easily than the original version of the coronavirus that causes COVID-19, and there is evidence vaccines work less well against it, leading some countries to restrict travel to and from South Africa.
Richard Lessells, an infectious disease specialist and one of the authors of the research on C.1.2, told reporters that,”this pandemic is far from over and that this virus is still exploring ways to potentially get better at infecting us”.
He noted that people should not be overly alarmed at this stage and that variants with more mutations were bound to emerge further into the pandemic.
Genomic sequencing data from South Africa show the C.1.2 variant was still nowhere near displacing the dominant Delta variant in July, the latest month for which a large number of samples was available.
In July C.1.2 accounted for 3% of samples versus 1% in June, whereas Delta accounted for 67% in June and 89% in July, media reports say.
Lessells said C.1.2 may have more immune evasion properties than Delta, based on its pattern of mutations, and that the findings had been flagged to the WHO.
Reports show South Africa’s Covid-19 vaccination campaign rather started on a slow start. It’s said that only around 14% of the country’s adult population fully has been vaccinated so far.