The World Health Organization classified on Nov 26 the latest variant B.1.1.529 of SARS-CoV-2 as a "variant of concern" and named it "Omicron". The new variant was first reported to the WHO from South Africa on Nov 24.

Omicron has been detected in a growing number of countries and regions worldwide. To prevent a potential pandemic resurgence fueled by the new variant, countries around the world have taken new preventive measures or tightened their existing restrictions.

Click the video to learn more about the new variant Omicron.