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The US is on a Covid plateau, and no one's sure what will happen next - CNN
Aug 10, 2022 50 secs
"All these things are still somewhat of a mystery."

BA.5 remains the dominant subvariant in the US for now, causing most new cases as it has since the last week of June.

Data from the US Centers for Disease Control and Prevention, published Tuesday, shows that the Omicron offshoot accounted for 87% of new cases in the first week of August, inching up a few percentage points from the week before.

That slight increase in prevalence is a sign that no other variants are outcompeting it -- and promising for future trends.

Alpha, Delta and Omicron "are cousins, not children," Hanage said.

If the next variant is as different as the change from Delta to Omicron, it would be "quite a change" from what's been happening recently, he said.

Over the past week, BA.4.6 grew from about 4% of cases in the US to just under 5%, according to CDC data.

Its mutations aren't "especially worrisome" when it comes to immune evasion, Topol said, but we just don't know yet.

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