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Show more News that at least three new variants of SARS-CoV-2 have emerged in three separate continents have sent a chill throughout the scientific community. All viruses mutate but the speed and scale of the changes and the fact they occurred independently, is seen as a wake-up call. Genetic sequencing in South Africa first raised the alarm about the version of the virus that was racing through populations in the Eastern and then Western Cape. Scientists at the country’s KwaZulu-Natal Research and Innovation Sequencing Platform, KRISP, were struck by the sheer number of genetic mutations, many of which were on the all-important spike protein. This is where the virus binds to human cells and where neutralising antibodies, our immune system’s defences, also mount their defence. Any changes there, researchers knew, could be bad news.

United statesUnited kingdomSouth africaEastern capeSouth africanShane crottyTim hefferDeborah cohenMuge cevikFiona hillDonald mcdonaldRichard lessellsMargaret harrisClaudia hammondMaria simonsNatal research