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GENEVA, March 2-- The head of the World Health Organization (WHO) said on Monday that the spread of COVID-19 in South Korea, Italy, Iran and Japan has become the greatest concern. South Korea has so far reported more than 4,200 cases and 22 deaths, meaning it has more than half of all cases outside China, WHO Director-General Tedros Adhanom Ghebreyesus said at a daily briefing. The cases in South Korea, however, appear to be coming mostly from suspected cases from the five known clusters, rather than the community, which indicates that surveillance measures are working and the epidemic can still be contained in the country, Tedros added. | 
