J&J single-dose shot shows good protection

Novavax effective against new variant: Novavax, a vaccine undergoing trials for effectiveness against novel coronavirus, has become the first immune dose to definitively confirm protection against the new variant of the deadly virus which was detected in the UK late last year. A late-stage clinical trial involving over 15,000 people in the UK found that the vaccine produced by American firm Novavax is 89.3 per cent effective in preventing coronavirus and offered 85.6 per cent protection against the new British strain of COVID-19, which is up to 70 per cent more transmissible.