South Africa Covid-19 strain poses `significant re-infection risk`: Study
(WorldNews Africa)

The coronavirus variant detected in South Africa poses a `significant re-infection risk` and raises concerns over vaccine effectiveness, according to preliminary research Wednesday, as separate studies suggested the British strain would likely be constrained by immunisations. Several new variants -- each with a cluster of genetic mutations -- have emerged in recent weeks, sparking fears over an increase in infectiousness as well as suggestions that the virus could begin to elude immune response, whether from prior infection or a vaccine. These new variants, detected from Britain, South Africa and Brazil, have mutations to the virus` spike protein, which enables the...