The CDC study provides the first estimate of the omicron shots’ real-world effectiveness against the XBB family of ...

CDC data shows the bivalent COVID vaccines protect against the omicron variant known as XBB and its subvariant XBB.1.5.

XBB.1.5 is a spinoff of XBB, a subvariant of omicron that health officials worldwide have been warning about since the fall.

XBB.1.5's prevalence remains highest in ... is growing in proportion quickly," Barbara Mahon, head of the CDC's proposed Coronavirus and Other Respiratory Viruses Division, told CBS News last ...

New data from the Centers for Disease Control and Prevention (CDC) indicates that the updated bivalent COVID-19 vaccines do ...

While the omicron subvariant is quickly becoming dominant in the U.S., CIDRAP notes that a feared-for bump in cases caused by people gathering over the holidays hasn’t yet been seen in the ...

The updated Covid boosters reduce the risk of Covid infection from the predominant omicron subvariant by nearly half, ...

A booster dose provided at least 3 months of protection against symptomatic XBB and XBB.1.5 infections in seniors who had ...

The fast-spreading Omicron XBB.1.5 is estimated to make up nearly half of U.S. COVID-19 cases, data from the Centers for ...