Athletes are being encouraged to get vaccinated against COVID-19 ahead of the Tokyo Olympics but it will not be compulsory, IOC Vice President John Coates said Thursday.

"Not compulsory, we can't do that," Coates, head of the IOC's Coordination Commission for the Tokyo Games, told reporters in Brisbane.

"But it is certainly being encouraged and the IOC has an agreement with COVAX where it's helping to facilitate the distribution of vaccines."