de Liège, which aside from the circle, consisted of nearly identical shapes. Tokyo's organizing committee denied that the emblem design was plagiarized, arguing that the design had gone through "long, extensive and international" intellectual property examinations before it was cleared for use. Debie filed a lawsuit against the IOC to prevent use of the infringing logo. The emblem's designer, Kenjirō Sano, defended the design, stating that he had never seen the Liège logo, while the Tokyo Organizing Committee of the Olympic and Paralympic Games (TOCOG) released an early sketch of the design that emphasized a stylized "T" and did not resemble the Liège logo. However, Sano was found to have had a history of plagiarism allegations, with others alleging his early design plagiarized work of Jan Tschichold, and that he used a photo without permission in promotional materials for the emblem, along with other past cases. On 1 September 2015, following an emergency meeting of TOCOG, Governor of Tokyo Yōichi Masuzoe announced that they had decided to scrap Sano's two logos. The committee met the following day to decide how to develop a new logo design. On 24 November 2015, an Emblems Selection Committee was established to organize an open call for design proposals, open to Japanese residents over the age of 18, with a deadline set for 7 December 2015. The winner would receive million and tickets to the opening ceremonies of both the 2020 Summer Olympics and Paralympics. On 8 April 2016, a new shortlist of four pairs of designs for the Olympics and Paralympics were unveiled by the Emblems Selection Committee; the Committee's selection—with influence from a public poll—was presented to TOCOG on 25 April 2016 for final approval. The new emblems for the 2020 Olympics and Paralympics were unveiled on 25 April 2016. Designed by Asao Tokolo, winner of the nationwide design contest, the emblems take the form of a ring in an indigo-colored checkerboard pattern. The design is meant to "express a refined elegance and sophistication that exemplifies Japan". Stadium design plagiarism After the futuristic Olympic stadium design by the British architect Zaha Hadid were ditched for cost-related reasons, new design by the Japanese architect Kengo Kuma faced plagiarism accusations due to its similarities to Hadid's original blueprint. Kuma admitted that there are similarities, but denied copying the work of Hadid. Environment, health and safety concerns 2019–20 coronavirus outbreak and other contagion risks 2019–20 coronavirus outbreak itself has been a concern for the 2020 Summer Olympics which is scheduled to take place in Tokyo starting end of July, and due to the Olympics the country's government has been taking extra precautions to help minimise the outbreak's worst impact. The Tokyo organising committee and the International Olympic Committee have been monitoring the outbreak's impact in Japan. Wuhan, the source of the outbreak, is located approximately 2,400 kilometers, from Tokyo. In the run-up to the Olympics, the Japanese Ministry of Health, Labour and Welfare has been carrying out catch-up vaccinations for the large portions of the Japanese population left unprotected from common infectious diseases at the inoculation over the last few decades. For example, Japan has no mandatory mumps vaccination and is fourth in the world in mumps cases, after China, Nepal and Burkina Faso, according to data from the World Health Organization (WHO). Following the outbreaks of rubella in Japan, which prompted the Centers for Disease Control and Prevention (CDC) to warn pregnant women of travel to Japan in 2018, the country's Ministry of Health, Labour and Welfare has been conducting inoculation of middle-aged men who had been left out of rubella vaccinations in the 1970s