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 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.