Researchers have said that transmission of the mystery virus is more complicated than they initially anticipated.
Researchers in Britain and Saudi Arabia have said that gene profiling of the MERS virus had provided insights, but no answer, as to how the mysterious microbe spreads.
Reporting online in The Lancet, the scientists said they had assembled a family tree of the coronavirus causing Middle East Respiratory Syndrome (MERS), using samples taken from 21 patients in Saudi Arabia.
With the exception of a cluster of cases in the eastern town of al-Hasa, the focal point of the outbreak is the Saudi capital, they said.
Via Ed Rybicki