Why coronavirus vaccine is taking so long to be ready - and when we can expect it

There are now 200,000 confirmed cases around the world. (Image: Getty Images/iStockphoto)

The world is in the grip of the coronavirus pandemic, with more than 200,000 people now confirmed as suffering from COVID-19.

Spain and Italy are in lockdown, while drastic measures have been introduced in the UK to stop the spread of the virus.