Authorities tell residents in capital city to stay home until weekend and submit temperature checks daily, according to Seoul-based NK News.
Investigators, who analysed virus genomes from over 7,500 infected people, find nearly 200 mutations in the SARS-CoV-2 virus since China's outbreak but say this does not mean it is getting deadlier.
Children may be at low risk for infection by Covid-19 but are vulnerable to other deadly diseases without the vaccinations that are currently being held back by border restrictions according to the WHO's Direct-General.
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