Experts in virology and infectious diseases say that while they already have unprecedented detail about the genetics and capabilities of the novel coronavirus, or NCoV, what worries them more is what they don't know.
The virus, which belongs to the same family as viruses that cause the common cold and the one that caused Severe Acute Respiratory Syndrome (SARS), emerged in the Middle East last year and has so far killed seven of the 13 people it is known to have infected worldwide.
"What we know really concerns me, but what we don't know really scares me," said Michael Osterholm, director of the U.S.-based Center for Infectious Disease Research and Policy and a professor at the University of Minnesota.
Less than a week after identifying NCoV in September last year in a Qatari patient at a London hospital, scientists at Britain's Health Protection Agency had sequenced part of its genome and mapped out a so-called "phylogenetic tree" - a kind of family tree - of its links.
"There's nothing in the virology that tells us this thing is going to stop being transmitted," said Osterholm. "Today the world is one big virological blender. And if it's sustaining itself (in humans) in the Middle East then it will show up around the rest of the world. It's just a matter of time."
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