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SA s Covid variant: How much more contagious it may be, and what it could mean for vaccines  Dec 28, 2020, 02:45 PM facebook An illustration of Covid-19. (Getty) SA s new Covid-19 variant is still being analysed, but one of SA s top genetic scientists expects it to be between 40% to 70% more transmissible.   Some of its unique mutations could also force vaccine producers to update their jabs.  Scientists now think variants could originate in people with very weak immune systems due to illnesses like cancer. For more articles, go to In the next few weeks, as laboratory work progresses , South Africans should get a clearer picture of its new Covid-19 variant, says Professor Tulio de Oliveira, director of the KwaZulu-Natal Research Innovation and Sequencing Platform (KRISP). KRISP coordinates the genetic research into the virus in South Africa.

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