Pilgrimages could spread the disease that has killed hundreds in the Middle East.
A test has confirmed that the virus spread from camels to humans.
The organization stopped short of calling the outbreak an emergency.
A new report sources the deadly virus to respiratory interaction with camels.
The teeth and bones date from 72 million years ago.
The Saudi Health Ministry says it has discovered a deadly virus in the eastern Saudi province of Jiddah.
Bringing to 43 the number of deadly cases in the kingdom at the center of the outbreak.
Unclear rules and competition for the potentially profitable rights to disease samples are slowing coronavirus cure progress.
Coronavirus has led to at least 20 deaths worldwide out of 40 cases.
Saudi Arabia says it has dedicated nine additional laboratories to help investigators track the SARS-like virus.
