Two Omicron sub-variants driving S. Africa COVID spike: WHO

Two new Omicron sub-variants are driving an increase in reported COVID cases in South Africa, the World Health Organization said Wednesday, stressing the importance of testing to monitor virus mutations and spread.
Two new Omicron sub-variants are driving an increase in reported COVID cases in South Africa, the World Health Organization said Wednesday, stressing the importance of testing to monitor virus mutations and spread.