In Naming "Omicron" From Greek Alphabet, Why WHO Skipped "Nu" and "Xi" : Rashtra News Omicron, first found in South Africa, has been identified in at least a dozen other countries.New Delhi: “Omicron”, the new Covid variant that has the world on alert, has been named after the 15th letter of the Greek alphabet. The
"Omicron", the new Covid variant that has the world on alert, has been named after the 15th letter of the Greek alphabet. The first 12 have already been used for naming other strains.