LOS ANGELES — The proportion of coronavirus cases of the ascendant omicron subvariant BA.2 is rising across the U.S. and along the West Coast, new federal forecasts show.
For now, weekly coronavirus cases remain flat nationally and in California, and are still declining in Los Angeles County.
But the data could be a prelude to an increase in coronavirus cases nationally for the first time since early January, when an earlier omicron variant swept the nation, resulting in record high numbers of simultaneously infected people and putting many hospitals under strain.
