A research group led by Associate Professor Shuhei Nomura of Keio University School of Medicine conducted a large-scale national survey on the intention to inoculate the new coronavirus vaccine. It turned out that I was changing my mind toward inoculation.


 Of the 1 people who answered "I don't know if I wouldn't inoculate" in the first survey, 8,077 in the second survey changed their minds to "I'm going to inoculate."When this group was analyzed by a statistical method called cluster analysis,
・ Recognized the benefits of inoculation
・ I learned about the inoculation status of people close to me
・ Recognized the social significance of inoculation
・ Vaccine side reactions and safety concerns have been dispelled
・ Convenience in work and relationships
It was found that it can be explained by the five features of-.

 On the contrary, out of 1 people who answered "inoculate" in the first survey, 1 people who answered "not inoculated / do not know" in the second survey are statistically analyzed by regression analysis. After analysis,
・ Unmarried
・ Poor health
・ I have not been vaccinated with influenza vaccine every year.
・ Has a history of infection with the new corona
-It became clear that the features are listed.

Paper information 1:[The Lancet Regional Health – Western Pacific] Characterizing reasons for reversals of COVID-19 vaccination hesitancyamong Japanese people: one-year follow-up survey

Paper information 2:[The Lancet Regional Health – Western Pacific] Factors associated with reversals of COVID-19 vaccination willingness: Results from two longitudinal, national surveys in Japan 2021-2022

Keio University

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