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

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 ...

The strain, known XBB.1.5, accounts for about 41% of confirmed COVID cases across the nation, the data shows. The mutation has gained considerable traction over the past week, the CDC noted ...

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

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

For nearly a month, the U.S. has been dealing with a new, now-dominant COVID variant, XBB.1.5. The latest data from the ...

CDC: XBB.1.5 Causing 43% of New Cases The highly transmissible XBB.1.5 omicron subvariant rose to the top of all COVID-19 strains circulating in the U.S. this week, according to data from the ...

However, the XBB.1.5 subvariant comprised 27.6% of sequenced COVID cases nationally for the week ending Jan. 7, 2023 — compared with 18.3% for the week ending Dec. 31, the CDC said on Friday.