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Asymptomatic cases refer to people who tested positive for the coronavirus but develop no symptoms such as fever, cough or sore throat, said the circular, noting that they are infectious and pose a risk of spreading to others.Screening of asymptomatic infections should be stepped up, targeting close contacts of confirmed patients, people involved in cluster outbreaks, those exposed to COVID-19 and travelers from areas with high risks of infections, said the document.Medical institutions are ordered to report infections to their superior disease control departments within two hours of asymptomatic COVID-19 carriers being found through a direct web-based system.
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