As a result of analyzing the effectiveness of the vaccine corresponding to the Omicron strain, the National Institute of Infectious Diseases and others found that the effectiveness of the vaccine in preventing the onset was 71%.
The research group has shown that it is highly effective in preventing the onset of the disease, and will also investigate how long the effect will last in the future.
According to the National Institute of Infectious Diseases, etc., the Omicron strain ``BA. We analyzed the effectiveness of the vaccine for the Omicron strain by comparing the vaccination history of those who tested positive and those who tested negative for the above 4,000 people.
As a result, 71% of people who received two or more doses of the conventional vaccine and received a booster dose of the Omicron strain vaccine were prevented from developing the disease.
When analyzed by vaccine type,
▽ 73% of those who received a booster
vaccine corresponding to ``BA.1'' and ▽ 69% of those who received a booster vaccine corresponding to ``BA.4'' and ``BA.5'' %.
The research group found that there was no significant difference in efficacy between vaccines for BA.1 and vaccines for BA.4 and BA.5, and vaccines for Omicron strains were shown to be highly effective in preventing onset. In the future, we will also investigate how long the effect will last.