Photo/Illutration An electron microscope shows monkeypox virions. (Provided by the U.S. Centers for Disease Control and Prevention)

The health ministry said on July 28 that it confirmed that a man visiting Tokyo from abroad is the second person infected with monkeypox in Japan.

The man, in his 30s, entered the country earlier this month, according to officials.

On July 21, he felt sick and noticed that a rash had developed in his mouth.

The next week, on July 27, he saw a doctor in Tokyo. When the test results came back, they confirmed he was infected with the monkeypox virus.

The man has other symptoms as well, such as a headache and muscle soreness, the ministry said.

He had developed some of the symptoms even before his arrival in Japan, the ministry said, leading officials to believe he contracted the virus before entering the country.

He is currently hospitalized in Tokyo and his condition is stable, the ministry said.

The ministry is investigating whether the man has come in close contact with anyone since he entered the country.

Officials said the man did not come into contact with the first person confirmed to have the monkeypox in Japan, a Tokyo man also in his 30s, whose infection was confirmed on July 25 after returning from Europe.