Coronavirus: How many people are at risk?

This strain of coronavirus, now named COVID-19, is twice as infectious as flu and without a vaccine makes it very hard to contain.

Sky's science correspondent Thomas Moore has been looking at why it poses such a risk to people and what the experts are doing to stop it.

SUBSCRIBE to our YouTube channel for more videos:

Follow us on Twitter:

Like us on Facebook:

Follow us on Instagram:

For more content go to and download our apps:

Apple:

Android

Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí:

coronavirus,covid,19,virus,infection,disease,death,dead,kill,How many people are at risk?,sky,news,thomas moore,explainer,china,wuhan,brighton,uk,quarantine,