1. The World Health Organization (WHO) has named the new coronavirus mutant strain discovered in South Africa Omicron (Chinese pronunciation is Omicron) after the Greek letters. The name Omicron was decided by the World Health Organization and was not chosen by anyone.

2. Naming by the WHO. According to the report issued by the WHO on the afternoon of the 26th, the B.1.1.529 variant that appeared in South Africa was characterized as the highest-level new coronavirus variant and named For Omicron (Omicron).

3. Based on the previous naming, the names of the new coronavirus mutant strains are very novel every time they mutate, so this time the Omicron mutant strain is also derived from the previous naming experience. The new coronavirus mutant viruses are all named after Greek letters, and Omi-cron is named after "Omi-cron" (the 15th Greek letter Ο).