Pandemic report warns of growing global threat as health teams in Africa move to contain Ebola outbreak

The World Health Organization said the Ebola outbreak could be much larger than what is currently being detected and reported. It warned of health risks to other countries.

"There are significant uncertainties to the true number of infected persons and geographic spread," the Geneva-based body warned

Ebola and hantavirus outbreaks sign of our 'dangerous' times: WHO

The world is already playing catch-up to a deadly disease.