The mysterious origins of the Omicron variant of SARS-CoV-2
The coronavirus disease (COVID-19) pandemic has ravaged the world for nearly two years, with continuous emergence of new variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Omicron, the latest variant of concern (VOC), has spread to all six continents, leading to a rapid increase in confirmed COVID-19 cases and surpassing Delta as the dominant variant in many countries.
