Media playback is unsupported on your device

Mers virus: World health chiefs mull emergency warning

14 May 2014 Last updated at 10:26 BST

The World Health Organization has been meeting to decide whether to declare a public health emergency after a sudden spike in cases of a deadly virus known as Middle East Respiratory Syndrome, or Mers.

The flu-like virus has killed at least 150 people since it first emerged in Saudi Arabia two years ago.

There have also been cases in Europe and most recently the US.

Tulip Mazumdar reports.