A large number of visitors to Tokyo during the Tokyo Olympic and Paralympic Games in 2020 resulted in an increase of injury/illness and burden to the routine emergency medical services system. Furthermore, extremely hot and humid weather, terrorism, and outbreaks of infectious diseases are marked risks.

We introduce the present status of an academic consortium (AC2020) to fulfill our mission as academic organizations. The Japanese Association for Acute Medicine (JAAM) and six academic associations have initially established the AC2020 since 2016, which consists of the 23 associations at this time. The role of the AC2020 is to provide knowledgeable evidence, intelligence, and support for constructing response plans for medical problems via the website (http://2020ac.com/).

The joint committee of the AC2020 (JC-AC2020) has been launched to accomplish consortium activities; make statements and recommendations, compile manuals, conduct seminars, and coordinate the training program of on-site medical teams. The JC-AC2020 organizes nine working groups of heat stroke, lightning strike, nursing, athletes, first responders, foreigners, pre and in-hospital response of MCI, and data collection for audit.

As of December in 2018, AC2020 has released 30 documents and 10 event-news on the website including seven statements, two recommendations of a prerequisite of the on-site medical team, and two manuals concerning the treatment of gunshot and explosive injuries. Based on some of these statements, the Tokyo government has already enhanced the previous plan.

The AC2020 will propose the web site as a portal site and platform, disseminate the activities widely to society, and ask for the cooperation of other related organizations and academic societies. The AC2020 will aim to provide the landmark project of mass-gathering medical care in Japan as well as the transition to the Olympic Games in Paris in 2024.