This page is a permanent link to the reply below and its nested replies. See all post replies »
Not a lot... Its just a simplified referencing system to prevent the title of a reference to Omicron from getting longer than the article you want to look up.
https://www.theatlantic.com/science/archive/2022/04/covid-variant-naming-omicron-ba2/629558/
https://www.theatlantic.com/science/archive/2022/04/covid-variant-naming-omicron-ba2/629558/