21:06Newshour07/04/2021 20:06 GMT: EU regulator says blood clotting is a 'very rare AstraZeneca side effect'BBC World Service Duration: 53 minutes Wed 7th Apr 2021, 21:06 on BBC World Service OnlineThe regulator said the benefit of the vaccine outweighs the risk. Show more GenresNewsFormatsMagazines & ReviewsBrandNewshour Source: BBC Online