Prof. Norimichi Matsueda from the School of Economics gave a presentation titled "Strategic Indivitual Behaviors and the Efficient Vaccination Subsidy" at Microeconomic Theory Workshop Wellington 2023, which was held on March 25, 2023 in Wellington, New Zealand. Once every year, around ten researchers were invited to participate in this workshop hosted by the Microeconomics Reseach Group at Victoria University of Wellington, and this time, the participants included one from Canada (The University of Guelph) and one from Japan (Kwansei Gakuin University), on top of domestic invitees from the University of Auckland, Auckland University of Technology, the University of Otago, Victoria University of Wellington and the University of Canturbery.  Each speaker had 30 minutes to present his/her own research, followed by very animated and fruitful academic interactions after each presentation.