Covid-19 outbreaks at the Tokyo Olympics
The Tokyo 2020 Olympics, postponed for a year due to the coronavirus pandemic, will be held under unprecedented conditions and tight quarantine rules to prevent the spread of Covid-19 infections.
Yet a number of cases have emerged involving athletes and other people involved with the Games.
The following is a list to date, in chronological order.
A coach with Uganda's squad tests positive on arrival at Narita airport and is quarantined at a government-designated facility.
The rest of the team heads by bus for their host city, Izumisano near Osaka in western Japan.
A Ugandan athlete tests positive, Izumisano officials said.
A member of Serbia's Olympic rowing team tests positive on arrival. The other four team members are isolated as close contacts.
One Lithuanian and one Israeli athlete test positive, according to reports. Later reports say the Lithuanian's results were unclear and subsequently tested negative.
A masseur for the Russian women's rugby sevens team tests positive, forcing the team into isolation for two days, the RIA news agency reports.
Officials in Munakata, southwestern Japan, confirmed that one staff member was hospitalised and said none of the team members could be considered close contacts.
The refugee Olympic team has delayed its arrival in Japan following a positive case with a team official in Doha.
The infected official is in quarantine without symptoms and 26 of the 29 refugees will remain in their Doha training camp.
Seven staff at a hotel in Hamamatsu, central Japan, where dozens of Brazilian athletes are staying have tested positive, a city official said.
Twenty-one members of the South African rugby team are in isolation after they are believed to have been in close contact with a case on their flight.
Eight athletes from the Kenya women's rugby team were classified as close contacts after a positive coronavirus case was found on their flight to Tokyo, said an official with the southwestern city of Kurume, where they were set to hold a training camp.
An Olympic athlete under a 14-day quarantine period tested positive for the virus, but had not yet moved to the Olympic Village, the organising committee's website reported, without giving further details.
They said one member of the Games personnel and four Tokyo 2020 contractors had also tested positive.