There remains concerns about one unidentified case of the Brazilian coronavirus variant and how to identify contacts in the UK.
Efforts to trace it have been narrowed down to 379 possible households in the south East of England.
An assessment of the Manaus variant showed it may spread more easily and evade the immune system.
SUBSCRIBE to our YouTube channel for more videos: www.youtube.com/skynews
Like us on Facebook: www.facebook.com/skynews
Follow us on Instagram: www.instagram.com/skynews
Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí www.youtube.com/skynewsespanol
For more content go to news.sky.com and download our apps: