Experts at the World Health Organization have named XBB.1.5 — also known as the "Kraken" strain — the most infectious version ...

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

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 ...

The CDC has published real-world data showing the omicron booster cuts the risk of mid illness from the fast spreading XBB ...

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

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