Sars-CoV 2 variants get a Greek letter labels

New variants: Mu (VOI) and Omicron (VOC)

https://www.who.int/en/activities/tracking-SARS-CoV-2-variants/

Alpha —B.1.1.7. United Kingdom;

Beta— B.1.3.5.1. South Africa;

Gamma—P1. Brazil;

Delta …B.1.617.2. India;

Variants of Interest (VOI):

Epsilon—B.1.427/429. United States;

Eta——B.1.525. Multiple countries;

Theta—P.3. Philippines;

Iota—B.1.526 United States;

Kappa… B.1.617.1. India.