The World Health Organisation voiced deep concern yesterday over the Sars-like virus that has killed 22 people in less than a year, saying it might potentially spread more widely between humans.
"We have a high level of concern over the potential ... for this virus to have sustainable person-to-person spread," WHO deputy chief Keiji Fukuda told diplomats gathered in Geneva for the World Health Assembly, the UN agency's decision-making body.
There has already been evidence of limited transmission between humans, and last week the WHO said two Saudi health workers had contracted the deadly coronavirus from patients - the first evidence of transmission in a hospital setting.
But Fukuda said the WHO was looking into "whether this has the potential to have a more extensive spread". Given the high fatality rate relative to the number of cases, experts have highlighted the power of the virus and the frightening prospect of it mutating into a form that leaps easily from human to human.
Fukuda's comments came after Saudi Arabia said another person had died from the virus. With a total death toll of 17, it has been the hardest hit by the disease that first emerged last June. So far, there have been 44 lab-confirmed cases worldwide, half of them fatal, with 30 infections in Saudi Arabia and the rest spread across Jordan, Qatar, Tunisia, the United Arab Emirates, Germany, Britain and France.
Most of the patients infected in Europe and Tunisia had links to or had travelled in the Middle East. The WHO said the virus had been renamed the Middle East Respiratory Syndrome Coronavirus (MERS CoV).