Taiwan has confirmed its first case of a new strain of bird flu.

Taiwan's Centers for Disease Control said Wednesday that a 53-year-old man became sick with the H7N9 bird flu virus after returning from working in the eastern Chinese province of Jiangsu on April 9.

It did not identify him or provide details on his condition, except to say that he had suffered from a high fever for three days.

China and Taiwan have close trade and economic ties. An estimated 1 million Taiwanese live on the mainland and some 6,000 Chinese tourists visit Taiwan every day.

The H7N9 bird flu virus emerged in China over the past month and has sickened more than 100 people there. More than 20 people have died.