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In December 2022, SARS-CoV-2 Omicron subvariants were experiencing convergent evolution, with substitutions occurring at the same spike (S) protein residues. XBB, a new recombinant variant,...

RASCOE: You said that it doesn't produce more serious illness. Are there any symptoms associated with Arcturus that may be different from omicron and other variants? DEL RIO: Symptoms that we...

The BA.2 subvariant edged out the original omicron strain (also known as BA.1) for the dominant spot after the winter surge, essentially rendering it obsolete. And BA.2.12.1 “might have a transmission advantage of about 25 percent over the BA.2 subvariant,” CDC Director Rochelle Walensky said in an April 26 news briefing.

Two new Omicron subvariants— BA.4 and BA.5, first identified in South Africa between January and February—are gaining steam in the United States, according to the latest estimates by the ...

The new omicron subvariant XBB.1.16, or arcturus, was responsible for 15% of new coronavirus cases over the past two weeks, according to estimates from the Centers for Disease Control and ...

Now, with the latest omicron variant, XBB, fueling a resurgence in cases, the response from China’s government and public is muted at best. The surge comes about six months after Beijing...

4 min Gift Article Chinese authorities are rushing to push out vaccines to fight an ongoing new wave of the coronavirus expected to peak in June and infect as many as 65 million people a week, as...

The White House recently received a sobering warning about the potential for the coronavirus to come roaring back, with experts reaching a consensus that there’s a roughly 20 percent chance during...