No evidence of object-to-human transmission of the novel coronavirus has been found so far in the latest local cluster in Guangzhou City, south China's Guangdong Province, a local health official told a press conference on Friday.
The cluster in Guangzhou includes 64 confirmed cases and 13 asymptomatic cases detected between May 21 and June 3.
The official said the existing clusters are related to local or family gatherings.
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