05:06Newsday24/08/2020 04:06 GMT: US allows wider use of blood plasma treatmentBBC World Service Duration: 53 minutes Mon 24th Aug 2020, 05:06 on BBC World Service OnlineAvailable for over a yearListen nowLive news, business and sport from around the world. Show more GenresNewsFormatsMagazines & ReviewsBrandNewsday Source: BBC Online