Passengers wearing face masks to protect against the spread of the new coronavirus ride on a train in Yokohama near Tokyo, Wednesday, April 8, 2020. (Photo by Koji Sasahara/AP Photo)





A lantern hangs outside an empty restaurant Saturday, March 28, 2020, in the Shimbashi section of Tokyo. okyo Gov. Yuriko Koike has repeatedly asked the city's 13 million residents to stay home this weekend, saying the capital is on the brink of an explosion in virus infections. (Photo by Jae C. Hong/AP Photo)





A woman wearing a face mask checks her phone as she waits for a train to depart on April 6, 2020 in Tokyo, Japan. Japan's Prime Minister, Shinzo Abe, today announced that the government would declare a state of emergency as soon as Tuesday that would cover 7 of Japans 47 prefectures, including Tokyo and Osaka, as the Covid-19 coronavirus outbreak continues to spread in the country. The move will allow affected prefectures to take measures including expropriating private land and buildings and requisitioning medical supplies and food from companies that refuse to sell them. (Photo by Carl Court/Getty Images)





Students sit apart from each other as they do self-study at an elementary school where the facility was opened for children who cannot stay at home alone while their parents are at work, in Nagoya, central Japan on March 3, 2020. (Photo by Kyodo News via Reuters)





A woman wearing a protective face mask to help stop the spread of the coronavirus rides a bicycle past blooming cherry blossom trees Wednesday, April 1, 2020, in Tokyo. (Photo by Eugene Hoshiko/AP Photo)





First-year pupils wearing face mask attend their entrance ceremony amid concern over the spread of coronavirus, at an elementary school in Sapporo, northern Japan, Monday, April 6, 2020. In Japan, reports say Prime Minister Shinzo Abe plans to declare an emergency in Tokyo and other cities Tuesday. (Photo by Kyodo News via AP Photo)





A man wearing a protective face mask, takes a photo with his mobile phone at noon, at Shibuya Crossing, during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, March 31, 2020. (Photo by Issei Kato/Reuters)





A scouple wearing protective face mask, following an outbreak of the coronavirus disease (COVID-19), walks on a nearly empty stree in a snow fall during the first weekend after Tokyo Governor Yuriko Koike (not in picture) urged Tokyo residents to stay indoors in a bid to keep the coronavirus disease (COVID-19) from spreading, at Ameyoko shopping and amusement district in Tokyo, Japan March 29, 2020. (Photo by Issei Kato/Reuters)





iPads attached to “newme” robots stand in for graduating students at a ceremony in graduation gowns and hats in Tokyo, Japan on March 28, 2020. (Photo by BBT University/Handout via Rreuters)





A statue of a Japanese Akita dog named “Hachiko” wearing a face mask is seen near Shibuya Station Wednesday, April 8, 2020, in Tokyo. Japanese Prime Minister Shinzo Abe declared a state of emergency on Tuesday for Tokyo and six other prefectures to ramp up defenses against the spread of the new coronavirus. Hachiko has waited for his owner University of Tokyo Prof. Eizaburo Ueno at the same place by the station every afternoon, expecting him to return home for nearly 11 years even after Ueno's death at work. (Photo by Eugene Hoshiko/AP Photo)





A man wearing face mask to protect against the spread of the new coronavirus walks through deserted Nakamise alley in Asakusa, Tokyo, Wednesday, April 8, 2020. Prime Minister Shinzo Abe declared Tuesday a monthlong state of emergency in Tokyo and six other prefectures because of a spike of infections in the country with the world's oldest population. (Photo by Koji Sasahara/AP Photo)





People wearing a protective face mask wait at a pedestrian crossing Thursday, April 2, 2020, in Tokyo. (Photo by Eugene Hoshiko/AP Photo)





A woman walks through a torii gate as snow falls Sunday, March 29, 2020, in Tokyo. Tokyo Gov. Yuriko Koike has asked the city's 13 million residents to stay home this weekend, saying the capital is on the brink of an explosion in virus infections. (Photo by Jae C. Hong/AP Photo)





Masked people stop on a bridge to photograph cherry blossoms Friday, March 27, 2020, in Tokyo. (Photo by Kiichiro Sato/AP Photo)





A man with protective mask rides an empty train Wednesday, April 8, 2020, in Tokyo. Japanese Prime Minister Shinzo Abe declared a state of emergency yesterday for Tokyo and six other prefectures to ramp up defenses against the spread of the coronavirus. (Photo by Eugene Hoshiko/AP Photo)





People talk during a sunny day at Yamashita park in Yokohama on April 4, 2020. (Photo by Charly Triballeau/AFP Photo)





Out-of-season snow falls in Tokyo, Japan on March 29, 2020. Bad weather and the “stay-at-home” request left Tokyo empty today. (Photo by Newscom/The Times)





People wearing face masks as they ride a bus in Edogawa-ku, Japan on March 29, 2020. Tokyo Governor Yuriko Koike asked residents to refrain from all non-essentials and abstain from going out this weekend to prevent an increase of coronavirus infection cases in the city. (Photo by Ramiro Agustin Vargas Tabares/Zuma Press)





A man views the New National Stadium, the main stadium for the Tokyo 2020 Olympics, as he visits the Shibuya Sky observation deck on March 24, 2020 in Tokyo, Japan. Although an official decision is yet to be announced, International Olympic Committee member Dick Pound has said the Tokyo 2020 Olympic Games will be postponed by one year because of the Covid-19 coronavirus after the chairman of the British Olympic Association said Great Britain would be unlikely to send a team to Tokyo this summer while Australia and Canada also said they will not compete as the global Covid-19 coronavirus pandemic that has so far seen over 380,000 infections around the world forces countries to take drastic measures to protect their populations. (Photo by Carl Court/Getty Images)





A photo session is held at the Yonago Castle ruins in Yonago, Tottori Prefecture, western Japan on April 4, 2020. (Photo by Newscom/Alamy Live News)