The research is still underway on the virulence of the Omicron coronavirus variant - but what's abundantly clear, according to experts, is that it's poised to spread rapidly across the US and will likely overwhelm the country's battered health care system.The variant is expected to become the "dominant strain" in the coming weeks, Centres for Disease Control director Dr Rochelle Walensky said.And after nearly two years of a pandemic that has caused more than 800,000 deaths in the US and overloaded hospitals, the omens aren't favorable for the next few months, experts say.
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