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

Updated Covid boosters cut the infection risk from XBB.1.5 subvariant by nearly half, CDC finds The report provides the first ...

The Omicron subvariant XBB. has likely become the dominant variant in the United States, accounting for 61.3% of COVID cases in the week ended Jan. 28, data from the U.S. Centers for Disease Control ...

The updated COVID-19 booster shots are at least 40% effective against symptomatic infection from omicron subvariants XBB.1.5 ...

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 ...

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 ...

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

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 ...

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

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 ...