TEMPO.CO, Tokyo - A member of the Ugandan Olympic team who tested positive for the coronavirus upon arrival in Japan had the Delta variant, Japan's Olympics minister said on Friday, June 25, adding to concern the Games - less than a month away - may trigger a new wave of infections.

A coach in the East African nation's delegation tested positive after arriving in Japan on Saturday, while a second member, an athlete, tested positive on Wednesday after arriving in the team's host city of Izumisano, officials said previously.

Olympics Minister Tamayo Marukawa told a news conference that the person who arrived on Saturday had been found to have the highly infectious Delta variant and that analysis was also being conducted on the second confirmed case, NHK public TV reported.

Marukawa said she would consult other ministries and liaise with those on the ground about what steps were needed, NHK said.

The handling of the case has sparked criticism from local officials and experts and fuelled concerns about what lies ahead.

Although one member tested positive for the virus at the airport, the rest traveled to the host town in a bus, accompanied by three city officials, an Izumisano official said. Those people were only designated "close contacts" days later.

Osaka Governor Hirofumi Yoshimura told reporters that Olympics delegations should be held at or near the airport if a member tested positive upon arrival. Izumisano city is in Osaka prefecture.

"It would be tough to apply this to the general public but with athletes' groups it's clear" they are close contacts, he said. "I think we should learn from this case as we head into the Games in earnest."

The case "clearly shows a lack of basic risk mitigation measures based on best available evidence," said Kenji Shibuya, former director of the Institute of Population Health at King's College London. Japan has not suffered the explosive outbreak of the virus seen elsewhere but has only recently emerged from the fourth wave of infections.

Read: Health Ministry Finds Delta Variant Tends to Infect Children

REUTERS