A new study shows that a person can be infected with one of the new variants of the virus even if they have passed Covid – 19 or been vaccinated. The variant was first discovered in South Africa in October and has now spread to several different countries around the world. “I think we should be concerned,” said Penny Moore, a professor at the National Institute of Communicable Diseases in South Africa. “Based on Penny’s data, there are ……

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