Vietnamese health authorities say a 63-year-old Taiwanese man has been diagnosed with Zika virus after visiting the Southeast Asian country.

The Vietnamese General Department of Preventive Medicine has confirmed it’s the fifth case of the mosquito-transmitted infection that the country has recorded.

The man developed symptoms after attending his son’s wedding ceremony in the southern province of Tra Vinh from August 28 to September 4.

He was admitted to a hospital in Taiwan on September 8 and tested positive for the virus.

According to the the World Health Organisation (WHO), Zika is caused by a virus transmitted primarily by Aedes mosquitoes.

WHO has advised pregnant women not to travel to areas with ongoing outbreaks of Zika virus.

It says the virus has been linked to increased rates of microcephaly, which is characterised with unusually small heads in babies born to infected mothers.

– TiVi Tuan-san