02:32Science In ActionCovid -19 hope for severe casesBBC World Service Duration: 34 minutes Fri 19th Jun 2020, 02:32 on BBC World Service News InternetAvailable for over a yearListen nowA readily available drug prevents some deaths, and others may also be useful Show more GenresFactualScience & NatureFormatsMagazines & ReviewsBrandScience In Action Source: BBC Online