A 51-year-old man who traveled to Vietnam with his wife last month was confirmed to have been infected with the Zika virus, Taiwan's center for disease control said Saturday.

It is the ninth case of imported Zika virus infection in Taiwan, according to the center.

The man developed symptoms, including fever and cough, on Sept. 23, and sought medical assistance on Sept. 25 after developing a rash on his trunk and limbs, according to the center, which added the man had been asked to prevent mosquito bites and isolate himself till Oct. 4.

Prior to the case, a 63-year-old man who visited  Vietnam  with his family from Aug. 28 to Sept. 4 was also confirmed to have been infected with the virus, the center said.

According to the center, it was determined that both cases became infected with the virus in Vietnam. Other cases were from countries including Thailand, Indonesia and Singapore, it added.