And so, with less than three months before they open on July 23, and with Japan in a state of emergency amid another wave of COVID-19, concern is mounting about how Olympic and Paralympic organizers can ensure the safety of 11,000 athletes from some 200 countries.
Canada's stance is its athletes won't jump the vaccine queue.
It likely wouldn't come to that anyways, according to Dr. Mike Wilkinson, the Canadian Olympic Committee's chief medical officer.
"Canada has vaccinated approximately just over 30 per cent of our population, and so we're doing pretty well," Wilkinson told The Canadian Press.
"It's moving very quickly, I am confident that the athletes will get vaccinated, as well as the rest of the team (coaches, etc.), before they leave for Tokyo."