> "'Nu' is too easily confounded with 'new,' and 'Xi' was not used because it is a common last name," the WHO said, adding that the agency's "best practices for naming disease suggest avoiding 'causing offence to any cultural, social, national, regional, professional or ethnic groups.'"

> Those best practices were outlined in a May 2015 document issued by the agency. The organisation said at the time that it wanted to "minimise unnecessary negative effects on nations, economies and people" when naming infectious diseases.

source: https://www.nzherald.co.nz/world/omicron-why-who-skipped-nu-...