According to the public account “Jinan City Disease Micro Health”, in the preliminary epidemiological investigation track of 3 confirmed cases (mild) and 27 asymptomatic infections announced on April 28, cases 9, 10, 11, 13, 18, 23, 24, and 28 were caused by infection within the family and belonged to family clustering cases.
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Source: CCTV News Client
Process Editor: TF016