direct to your inboxA fourth Covid-19 vaccine could be approved for use in the UK within weeks as late-stage trials suggested it was 89pc effective in preventing coronavirus.The UK has secured 60 million doses of the Novavax jab – to be produced on Teesside – which is believed to offer protection against the new UK and South African variants.It was shown to be 89.3pc effective at preventing coronavirus in participants in its Phase 3 clinical trial in the UK, which involved more than 15,000