Photo/Illutration The novel coronavirus (Provided by the U.S. National Institute of Allergy and Infectious Diseases)

Japan on Dec. 1 announced its second infection case with the Omicron variant of the novel coronavirus, a man in his 20s who arrived at Narita Airport from Peru late last month.

Chief Cabinet Secretary Hirokazu Matsuno confirmed the case but did not reveal the patient’s nationality.

The man tested positive for the novel coronavirus in a test at the airport after he landed on Nov. 27, according to the health ministry.

He showed no symptoms at the time of entry but later developed a fever and sore throat, the ministry said.

His infection with Omicron was confirmed in genome sequencing at the National Institute of Infectious Diseases in Tokyo.

He is now isolated at a medical institution.

On Nov. 30, the government said a Namibian diplomat who landed at Narita Airport on Nov. 28 was Japan’s first case of Omicron infection.