Authorities in Vinh Long Province, located in Vietnam’s Mekong Delta, have reported the area’s first Zika victim.

The provincial Preventive Medicine Center announced on Tuesday that N.H.K., 63, residing in Trung Chanh Commune, Vung Liem District, was the first patient to be diagnosed with the mosquito-borne Zika disease.

K. has been put under close supervision, while measures have been taken to prevent the spread of the disease.

Initial information reveals that the patient had gone to the southern province of Dong Nai prior to his diagnosis in Vinh Long.

Twenty-seven Zika cases had been recorded in seven Vietnamese provinces and cities in the first seven months of this year, among which Ho Chi Minh City has the highest number of patients, Tran Dac Phu, head of the General Department of Preventive Medicine, stated at a conference in late July.

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

People with Zika can exhibit symptoms including a mild fever, skin rashes, conjunctivitis, muscle and joint pain, malaise or a headache that normally lasts between two and seven days, the WHO said.

The U.S. Center for Disease Control and Prevention said on its website that the virus can be transmitted via two species of mosquitoes, the Aedes aegypti and the Aedes albopictus, both infamous for spreading dengue, chikungunya, and other known viruses.

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