Several qualification events have already been impacted due to the virus.

Tokyo Organising Committee chief executive Toshiro Muto hopes it will be "eradicated as quickly as possible".

"We are extremely worried in the sense that the spread of the infectious virus could pour cold water on momentum for the Games," said Muto.

More than 24,300 cases of the virus have been recorded in China and 490 people have died, with 10 cases also confirmed on a quarantined Japanese cruise ship.

Two people have died of the disease outside of mainland China - one in Hong Kong and one in the Philippines.

The World Health Organization has declared the outbreak as a global health emergency but said it did not yet constitute a "pandemic", or the worldwide spread of a new disease.

Japanese government officials, including prime minister Shinzo Abe, say they will work hard to minimise any impact on the Games, which start on 24 July.

Saburo Kawabuchi, mayor of the Athletes' Village where an expected 11,000 athletes will stay, says he hopes for a "smooth Olympics".

"We will do our everything we can to protect the athletes to allow them to produce their best performances," he added.