Tokyo Games organisers face “real problems” staging the Olympics next year as coronavirus infections continue to soar, senior international Olympic official John Coates said.

Coates, Australia’s Olympic chief and head of the International Olympic Committee’s inspectorate for Tokyo, said organisers had to assume there would be no vaccine for COVID-19, or none in sufficient quantity, in time for the Games.

“[Japanese] Prime Minister [Shinzo] Abe says the Games can only happen in 2021. We can’t postpone it again and we have to assume that there won’t be a vaccine or, if there is a vaccine, it won’t be sufficient to share around the world.”

The Summer Games opening ceremony is due to take place on July 23, 2021, after the IOC and organisers in Japan acted on WHO advice in March to put a one-year delay in place.

Coates said Games organisers would need to start planning in October for what could be a “very different” Olympics if there were no signs COVID-19 was being eradicated.

“By October this year, if there are signs that it is being contained but not eradicated, then we are starting to work through and we’re preparing for it now the different scenarios by which the sport could take place,” he said.

“Do we quarantine the Olympic Village? Do all athletes when they get there go into quarantine? Do we restrict having spectators at the venues? Do we separate the athletes from the mixed zone where the media are?