07:06Newsday29/01/2021 07:06 GMT : Novavax proven effective in phase 3 trialsBBC World Service Duration: 53 minutes Fri 29th Jan 2021, 07:06 on BBC World Service Americas and the CaribbeanAvailable for over a yearListen nowCovid-19 vaccine shows positive results in the UK Show more GenresNewsFormatsMagazines & ReviewsBrandNewsday Source: BBC Online