COVID-19 vaccine effective against highly contagious XBB variant: CDC

12:50:00 AM, Sunday 5th of March 2023 | in coronavirus

Covid-19 vaccines and boosters are effective against the highly transmissible sub-lineages of Omicron -- XBB and its subvariant XBB.1.5 -- the US Centers for Disease Control and Prevention (CDC) has said. First seen in August, XBB.1.5 now accounts for nearly 90 per cent of all Covid-19 cases reported in the US, the CDC said.