variants of concern, who labels, scientific labels and flags of the countries where they were first detected.

2019 africa african africangamma alpha alphabet b11529 b117 b1351 b16172 banner beta blue botswana botswanian brazil brazilian brazilndelta britain british concept concern coronavirus coronaviruses countries covid delta detected england english epidemic first flag flags gamma great greek green health icon illustration illustrations india indian kingdom labels lineage mutated mutation name national nbeta ncov ndelta new ngamma nomicron old omicron omikron orange pango pink protein red scientific sign south spike symbol united variant variants vector virus voc who