LOS ANGELES, May 25( Xinhua)--COVID-19 cases are surging again in the United States, powered by a rising tide of Omicron subvariants circulating rapidly across the country.A new form of the Omicron subvariant, known as BA.2.12.1, has become the dominant strain among new U.S. COVID-19 cases, according to the latest estimates released by the U.S. Centers for Disease Control and Prevention( CDC) on Tuesday. The new subvariant made up about 58 percent of all new U.S. cases for the week ending May 21
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2022-05-26 00:00:00.0