Senior Vice Defense Minister Yasuhide Nakayama, center, and Osaka Governor Hirofumi Yoshimura check out the Osaka International Convention Center in Osaka on May 3. (Yoshiaki Arai) The cavernous Osaka International Convention Center will serve as a venue for mass vaccinations late this month as Osaka Prefecture struggles to contain a steep surge in COVID-19 cases, the government said May 3. The building in Osaka’s Kita Ward is so vast it is dubbed Grand Cube Osaka. Elderly residents from Osaka Prefecture will get priority during the three-month program being overseen by the Self-Defense For...