Regarding the new coronavirus vaccine, the National Institute of Infectious Diseases has released a preliminary analysis result that the effect of preventing the onset by the third inoculation in Japan is estimated to be 81% at present.
The results of this preliminary analysis were reported at an expert meeting of the Ministry of Health, Labor and Welfare held on the 16th.
A group such as the National Institute of Infectious Diseases reported that 1,352 people who visited 13 fever outpatient clinics in the Kanto region between the 3rd and 31st of last month, when the Omicron strain became the epidemic, were affected by the vaccine. We analyzed the preventive effect.
As a result, the effect of the two inoculations tended to decrease over time, but
the estimated effect of the vaccine was 49% for people from 4 to 6 months after the second inoculation
. The estimated effect is 53% even for people who have passed more than a month, which means that a certain effect can be expected.
In addition, of the 22 people who received the third vaccination, 5 were confirmed to be infected, and the estimated effect was 81%, so it is possible that additional vaccinations will increase the effect in the group. It is said that it was shown.
Motoi Suzuki, director of the National Institute of Infectious Diseases Epidemiology Center, said, "The vaccine is expected to have a certain effect on the Omicron strain, although it is lower than the Delta strain. Therefore, it is necessary to increase the effect again with the third inoculation. "