New coronavirus may be passed person to person - WHO
13 May 2013 Last updated at 16:56 BST
The World Health Organization says it appears likely that the novel coronavirus (NCoV) can be passed between people in close contact.
This comes after the French health ministry confirmed a second man had contracted the virus in a possible case of human-to-human transmission.
Two more people in Saudi Arabia are also reported to have died from the virus, according to health officials.
Rebecca Morelle reports.