The World Health Organization is urging all countries to be more vigilant as South Korea reported more deaths.from.the Middle East Respiratory Syndrome,or MERS,virus.The total number of MERS cases there is now more than 170. WHO officials say the spread ofdthe mysterious virus in South Korea is.not.a.worldwide public health emergency.However,thed.U.N health agency says alack of awareness about the virus among health workers and.the public in.South Korea was a major reason for its fast pread.South Korea is now taking strong measures to prevent others from coming incontact with people who are infected. Hospital workers are taking extra precautions with those suspected of having MERS.Workers are also takingchildren’s temperatures at schools,and sanitizing – carefully cleaning –buses.