As health officials scramble to minimize spread of the highly contagious Omicron variant, many experts have recommended that ...

LONDON — As more cases of the new omicron Covid variant emerge around the world, experts say it's likely that the variant, first identified in South Africa last week, had already been circulating for ...

The new Omicron variant might prompt a return to stricter Covid-19 measures if not enough people get vaccinated or boosted, health experts say. The new Omicron variant might prompt a return to ...

Add Yahoo as a preferred source to see more of our stories on Google. Two new Omicron subvariants, called BQ.1 and BQ.1.1, have now become dominant in the U.S., according to the latest CDC data.

In a recent study posted to the medRxiv* preprint server, researchers quantified the magnitude and rate of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant outbreak in ...

Infants younger than 6 months had the same rate of hospitalization as seniors age 65 to 74 during this summer’s Omicron wave, according to a new report. The findings, published by the U.S. Centers for ...

April 19 (Reuters) - Older people and those with weakened immune systems may get a second dose of Omicron-targeting COVID-19 vaccines, the U.S. Centers for Disease Control and Prevention (CDC) said on ...

Jan 6 (Reuters) - The Omicron subvariant, XBB.1.5, is estimated to account for 27.6% of COVID-19 cases in the United States for the week ending Jan. 7, data from the Centers for Disease Control and ...

The new omicron variant took only a few weeks to live up to dire predictions about how hugely contagious it is. But scientists don't yet know if it causes more severe disease even as the world faces ...

XBB.1.5 made up 27.6% of sequenced Covid cases nationally for the week ending Jan. 7 compared to 18.3% for the week end Dec. 31. The World Health Organization has described XBB.1.5 as the most ...