BEIJING, March 13 (Xinhua) -- China's National Health and Family Planning Commission on Sunday confirmed the nation's first imported yellow fever case in Beijing.

The patient, a 32-year-old man from east Zhejiang Province, first experienced stage one symptoms of the disease, including fever and chills, on March 8 while still in Luanda, capital of Angola in Africa.

He sought medical treatment after returning to China on March 10. According to the commission, the patient is in a relatively serious condition with weakened liver and kidney functions.

The commission confirmed the case upon test results produced by the Beijing Center for Diseases Prevention and Control and the Chinese Center for Disease Control and Prevention (CDC).

Yellow fever is an acute viral disease transmitted by infected mosquitoes and mostly found in tropical regions of Africa, and Central and South America.

A panel of experts from Beijing and the CDC evaluated the case, concluding the risk of transmission and spreading is fairly low, as it is not the season for mosquito breeding.

The symptoms of the disease include fever, jaundice, and bleeding.