The US CDC = Center for Disease Control on the 25th has a certain effect in preventing the onset of the latest vaccine against the XBB lineage mutant virus, including the Omicron strain "XBB.1.5", whose infection is rapidly expanding. announced the results of the analysis.
In the United States, infections with the Omicron strain "XBB.1.5" have spread rapidly since last month, and it is estimated that 49.1% of those newly infected in the week ending on the 21st of this month are infected.
From last month to the 13th of this month, the CDC has investigated the vaccination status of those who have been tested for the new corona, and has found the latest vaccine currently approved against the XBB lineage mutant virus, including "XBB.1.5". analyzed how effective it was.
As a result, after multiple doses of the conventional vaccine, when a booster dose of a vaccine containing the component corresponding to the Omicron strain "BA.5" was given, the onset of XBB lineage virus was more likely to occur than when the booster was not given. The preventive effect was 49% for those aged 18 to 49, 40% for those aged 50 to 64, and 43% for those aged 65 and over, indicating a certain effect.
In the United States, a booster vaccination for ``BA.5'' has started since September last year, and the CDC says, ``Those who are able should get the latest vaccine.''