coronavirus without any symptoms are driving the spread because they carry just as much of the virus, experts have warned. Researchers in South Korea said people infected without symptoms have "comparable potential" to spread than those with them.Symptoms include fever, a new and persistent cough and a new loss or change of taste or smell.Professor Sung-Han Kim said the study urged the use of face masks among the general public.His study evaluated how much of the virus both groups were carrying.
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