A staff member encourages visitors to maintain social distance near the second Olympic flame cauldron on the Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen next to a signboard advising to maintain social distance at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

The second Olympic flame cauldron is seen next to a signboard advising to maintain social distance at Ariake Yume-no-Ohashi Bridge, a day after the official opening of Tokyo 2020 Olympic Games in Tokyo, Japan July 24, 2021. REUTERS/Issei Kato

Tokyo 2020 Olympics - Gymnastics - Artistic - Men's Individual All-Around - Qualification - Ariake Gymnastics Centre, Tokyo, Japan - July 24, 2021. Judges and photographers keep social distance as they work during the competition. REUTERS/Athit Perawongmetha

A volunteer observes social distancing as he eats in the cafeteria of the Tokyo Metropolitan Gymnasium during the Tokyo 2020 Olympic Games in Tokyo, Japan, July 23, 2021. REUTERS/Thomas Peter

Tokyo 2020 Olympics - Handball Training - Yoyogi National Stadium, Tokyo, Japan - July 23, 2021 Social distancing markers during training REUTERS/Susana Vera

A volunteer supervises socially distanced lanes put in place to deal with media bus queues at the Media Transport Mall (MTM) during the Tokyo 2020 Olympic Games in Tokyo, Japan, July 23, 2021. REUTERS/Clodagh Kilcoyne

People wait on social distance markers outside the Ariake Tennis Park at the Tokyo 2020 Olympic Games in Tokyo, Japan, July 23, 2021. REUTERS/Mike Segar

Pilgrims keeping social distance and wearing face masks, perform farewell Tawaf around the holy Kaaba in the Grand Mosque, after completing their extended Haj, "Haj Al Kabeer", during the annual Haj pilgrimage in the holy city of Mecca, Saudi Arabia, July 22, 2021. REUTERS/Ahmed Yosri

Pilgrims keeping social distance and wearing face masks, perform farewell Tawaf around the holy Kaaba in the Grand Mosque, after completing their extended Haj, "Haj Al Kabeer", during the annual Haj pilgrimage in the holy city of Mecca, Saudi Arabia, July 22, 2021. REUTERS/Ahmed Yosri

Pilgrims keeping social distance and wearing face masks, perform farewell Tawaf around the holy Kaaba in the Grand Mosque, after completing their extended Haj, "Haj Al Kabeer", during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia, July 22, 2021. REUTERS/Ahmed Yosri

Smokers maintain social distance as they wait for their turn to smoke at a designated outdoor area of the Main Press Center (MPC), ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 22, 2021. REUTERS/Susana Vera

Smokers maintain social distance as they wait for their turn to smoke at a designated outdoor area of the Main Press Center (MPC), ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 22, 2021. REUTERS/Susana Vera

A reminder for social distancing is seen on a photo position at Makuhari Messe Hall A, the venue for the taekwondo and wrestling competitions for the Tokyo 2020 Olympic Games that were postponed to 2021 due to the coronavirus disease (COVID-19) pandemic, in Tokyo, Japan July 22, 2021. REUTERS/Murad Sezer

A man stands next to a marker as he observes social distancing ahead of the Tokyo 2020 Olympic Games that were postponed to 2021 due to the coronavirus disease (COVID-19) pandemic, in Tokyo, Japan, July 22, 2021. REUTERS/Siphiwe Sibeko

Police officers walk in a line as they observe social distancing, ahead of the Tokyo 2020 Olympic Games that were postponed to 2021 due to the coronavirus disease (COVID-19) pandemic, in Tokyo, Japan, July 22, 2021. REUTERS/Siphiwe Sibeko

Smokers wait their turn in a queue as they observe social distancing, during a smoke break ahead of the Tokyo 2020 Olympic Games that were postponed to 2021 due to the coronavirus disease (COVID-19) pandemic, in Tokyo, Japan July 22, 2021. REUTERS/Siphiwe Sibeko

Workers stand socially distanced beside Olympic mascots at a corporate stand in the Media Press Centre, ahead of the official opening of the Tokyo 2020 Olympic Games, in Tokyo, Japan July 21, 2021. REUTERS/Clodagh Kilcoyne

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, arrive to perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, arrive to the Grand Mosque to perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri TPX IMAGES OF THE DAY

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distance and wearing face masks, perform Tawaf during the annual Haj pilgrimage, in the holy city of Mecca, Saudi Arabia July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distancing and wearing protective face masks, cast stones at pillars symbolizing Satan during the annual Haj pilgrimage, amid the coronavirus disease (COVID-19) pandemic, in Mina, near the holy city of Mecca, Saudi Arabia, July 20, 2021. REUTERS/Ahmed Yosri

Muslim pilgrims, keeping social distancing and wearing protective face masks, cast stones at pillars symbolizing Satan during the annual Haj pilgrimage, amid the coronavirus disease (COVID-19) pandemic, in Mina, near the holy city of Mecca, Saudi Arabia, July 20, 2021. REUTERS/Ahmed Yosri

Members of the media stand near the entrance to Tokyo National Museum during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A member of the media holds a camera during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

Members of the media stand outside Tokyo National Museum during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A member of the media visits Hama-rikyu Gardens during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

Members of the media visit Hama-rikyu Gardens during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

Members of the media visit in Hama-rikyu Gardens during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A general view of the Tokyo Tower during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

Members of the media walk in Hama-rikyu Gardens during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

Members of the media are seen outside Tokyo National Museum during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

Leaflets are seen during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A general view during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A general view from Hama-rikyu Gardens during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A tour guide speaks during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A tour guide checks tickets during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A member of the media has his temperature taken during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A member of the media has his temperature taken during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

A general view during an escorted and controlled tour for media representatives, ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, July 19, 2021. Picture taken July 19, 2021. REUTERS/Molly Darlington

Muslims follow social distancing measures while praying inside a mosque, during a lockdown due to the coronavirus disease (COVID-19) outbreak in Putrajaya, Malaysia July 16, 2021. REUTERS/Lim Huey Teng

Muslims follow social distancing measures while praying inside a mosque during a lockdown due to the coronavirus disease (COVID-19) outbreak in Putrajaya, Malaysia, July 16, 2021. REUTERS/Lim Huey Teng

Muslims follow social distancing measures while praying inside a mosque during a lockdown due to the coronavirus disease (COVID-19) outbreak in Putrajaya, Malaysia, July 16, 2021. REUTERS/Lim Huey Teng

Muslims follow social distancing measures while praying inside a mosque during a lockdown due to the coronavirus disease (COVID-19) outbreak in Putrajaya, Malaysia, July 16, 2021. REUTERS/Lim Huey Teng

Muslims follow social distancing measures while praying inside a mosque during a lockdown due to the coronavirus disease (COVID-19) outbreak in Putrajaya, Malaysia, July 16, 2021. REUTERS/Lim Huey Teng

A reminder for social distancing is seen at the Tokyo 2020 Olympic Games Main Press Center during the coronavirus disease (COVID-19) outbreak in Tokyo, Japan, July 16, 2021. REUTERS/Thomas Peter

The Bootleg Fire glows in the distance, near Beatty, Oregon, U.S., July 13, 2021. Picture taken July 13, 2021. REUTERS/Mathieu Lewis-Rolland

People wait in a queue, without maintaining social distance, to get a dose of Chinese Sinopharm vaccine against the coronavirus disease (COVID-19) in Kathmandu, Nepal, July 13, 2021. REUTERS/Navesh Chitrakar