id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-269973-sntnmqqd	To, Kelvin Kai-Wang	Unique SARS-CoV-2 clusters causing a large COVID-19 outbreak in Hong Kong	2020-08-05		.txt	text/plain	1860	139	63	However, the number of COVID-19 cases remained relatively low due to the early implementation of stringent public health measures, including border control, voluntary community-wide wearing of face masks, hand hygiene and social distancing, prompt isolation of suspected cases, and testing and quarantine of close contacts and travelers from epidemic areas [2, 3] . Spike protein D614G mutation was not found in any genomes during the first wave, which mainly involved travelers from mainland China or other parts of Asia, or the linked local cases. The majority of genomes from locally-acquired cases (91%) during this third wave belong to a cluster HK1, a unique cluster within the GR clade, which is characterized by 4 non-synonymous mutations (nsp3 A85V, nsp15 A231V, spike protein S12F, NP A12G) and 1 synonymous mutation (NP C29144T). Two unique SARS-CoV-2 clusters have been identified during this large summer outbreak in Hong Kong shortly after the easing of social distancing policies.	./cache/cord-269973-sntnmqqd.txt	./txt/cord-269973-sntnmqqd.txt