The first case of the Zika virus infection has been confirmed in South Korea.
Zika, a mosquito-borne virus, has been declared a global health emergency by the World Health Organization (WHO).
The virus has spread rapidly in Brazil and the Americas, and is suspected of causing birth defects.
WHO experts caution the link between the virus and microcephaly – in which babies are born with underdeveloped heads – is not yet proven.
Isolated Zika infections have been reported in a handful of countries in Asia.
South Korea said the infected man had been quarantined and his movements tracked since returning home, according to the Yonhap news agency.