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.

In a study released today by the Centers for Disease Control and Prevention, a single bivalent COVID-19 vaccine booster ...

The latest COVID variant of concern, XBB.1.5, continues to rise but still ... Some 27.6% of new cases nationwide are linked to the variant, the CDC currently projects, with a prediction interval ...

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

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

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

Early data published by the CDC Wednesday offers evidence that Moderna and Pfizer’s updated bivalent booster shots — tailored last summer for the omicron subvariants BA.4 and BA.5 omicron ...

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 ...

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 ...

Vaccine efficacy against symptomatic infection from XBB.1.5 varied by age range, with people ages 18-49 seeing the highest level at 49%.