Japan is still preparing to host the Olympics, Prime Minister Shinzo Abe said on Saturday, despite rising global concern about the viability of the summer Games due to the coronavirus outbreak.

Abe and his government have been adamant the Olympics will go ahead, even as other global sporting events have been put on hold. Speculation about a delay from the July start date has grown since the US President Donald Trump said organisers should consider a one-year postponement.

Abe and Trump held a call after those comments, prompting the US president to say on Twitter that the Olympic venue was magnificent.

But this may not be enough to assuage sponsors of the Games, who are increasingly nervous about how the impact of the outbreak on the competition.

The Olympic Torch relay, in which the Olympic flame typically starts a tour around the host nation, is due to start in the Japanese prefecture of Fukushima in less than two weeks. The tour of the torch through Greece has already been cut short.

“We will overcome the spread of the infection and host the Olympics without problem, as planned,” Abe told a news conference in Tokyo, adding that delaying or cancelling the Olympics was “not a subject at all” in his call with Trump.

He said Japan working closely with the International Olympic Committee, which will have the final decision whether the Games go ahead, and the UN World Health Organisation, suggesting he accepted that Tokyo would not ultimately decide on the event.

He said Japan had a relatively low infection rate and had not seen an explosion in cases as seen in South Korea, China, Italy and Iran.

Tokyo governor Yuriko Koike promised thorough measures against the coronavirus outbreak and said preparations for a “safe and secure” Games were progressing, TV Asahi reported.