We turn now to the coronavirus, another milestone for the Chinese city of Wuhan.Health authorities report they found no new cases on the last day of May after testing 60,000 people.This is the first day since citywide testing began weeks ago that there's been no spike.Officials have been testing all 11 million residents, looking for asymptomatic patients.They do not show any symptoms of the virus, but still could be contained contagious. However health authorities now say the low asymptomatic rate suggest silent carriers may not be that infectious

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