Coronavirus: As BA.2 subvariant of Omicron rises, lab studies point to signs of severity - CNN

Coronavirus: As BA.2 subvariant of Omicron rises, lab studies point to signs of severity - CNN: The BA.2 virus -- a subvariant of the Omicron coronavirus variant -- isn't just spreading faster than its distant cousin, it may also cause more severe disease and appears capable of thwarting some of the key weapons we have against Covid-19, new research suggests.

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