06:06Newsday02/12/2021 06:06 GMT : Omicron variant fuelling ‘exponential’ rise in Covid cases, say South Africa officialsBBC World Service Duration: 50 minutes Thu 2nd Dec 2021, 06:06 on BBC World ServiceAvailable for over a yearListen nowOmicron variant is rapidly becoming the dominant strain in South Africa Show more GenresNewsFormatsMagazines & ReviewsBrandNewsday Source: BBC Online