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The continued spread of the SARS-CoV-2 virus has spawned a Greek alphabet of variants — a naming system used by the World Health Organisation (WHO) to track concerning new mutations of the virus that causes Covid-19. Some have equipped the virus with better ways of infecting humans or evading vaccine protection.
Scientists remain focused on Delta, now the dominant variant around the world, but are tracking others to see what may one day take its place.
Read the full Reuters story here.
