Global Spread of Omicron, New Variant of Concern
November 29, 2021
The first known confirmed Omicron (B.1.1.529) infection was from a specimen collected on November 9, 2021. The variant quickly became a new variant of concern because of its rapid spread in South Africa and globally, as well as the large number of mutations found in the spike protein (1). Many countries are imposing travel bans on Southern African countries.