02:32Science In ActionCovid -19 and ChildrenBBC World Service Duration: 32 minutes Fri 3rd Jul 2020, 02:32 on BBC World Service East and Southern AfricaAvailable for over a yearListen nowWhy a minority become gravely ill is still a mystery Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandScience In Action Source: BBC Online