After two months of relative quiescence, a large COVID-19 outbreak occurred in Hong Kong in July 2020 after gradual relaxation of social distancing policy. Two unique SARS-CoV-2 phylogenetic clusters have been identified among locally-acquired cases, with most genomes belonging to cluster HK1 which is phylogenetically related to SARS-CoV-2 reported overseas.
Keywords: COVID-19; SARS-CoV-2; outbreak; whole genome sequencing.
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