Why is the Omicron variant so concerning? Virologist warns Covid strain could ‘wreak havoc’ in HK | South China Morning Post

As the World Health Organization races to better understand the new coronavirus variant Omicron amid growing concern around the globe about this new Covid-19 mutation, how concerned should we be about Omicron? It's still unclear whether the latest strain of the coronavirus is more infectious or causes more severe di…

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