A group led by Yoshinori Kamiyo at Keio University developed a method to predict changes in antibodies after vaccination. The group measured and analyzed the amount of antibodies in 3 university hospital and other staff who received two doses of the Pfizer vaccine in March and April every few weeks to months.
Based on the results, the group is developing a model that predicts the amount. of antibodies after booster vaccination and an app that can determine when to take. additional vaccination to obtain sufficient immunity.