COVID-19 virus has spawned a Greek alphabet of variants – a naming system used by the World Health Organization (WHO) to track concerning new mutations of the virus that causes SARS-CoV-2.
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.
Florida hit by its deadliest COVID-19 wave yet, driven by Delta variant surge The Delta variant first detected in India remains the most worrisome.
It is striking unvaccinated populations in many countries and has proven capable of infecting a higher proportion of vaccinated people than its predecessors.The WHO.