The Ministry of Health on Wednesday confirmed the third case testing positive for Zika in Vietnam.

A male patient, 27, from Son Ha District in the south-central province of Phu Yen, was hospitalized on June 27 with skin rashes, a high fever, muscle and joint pain, and a headache, doctors said, adding that they then diagnosed him with dengue fever.

The patient was discharged on June 30 with that diagnosis.

But in late July, the Pasteur Institute in the south-central city of Nha Trang, said that the 27-year-old had contracted Zika, making him the third confirmed case of the infection in Vietnam after the two othersin the beach city and Ho Chi Minh City in late March.

The patient in Nha Trang was a 64-year-old woman while that in Ho Chi Minh City was 33 years old and pregnant at the time.

Both showed typical symptoms of the disease, and three tests confirmed they were Zika-positive, according to health officials.

There have been no new cases of Zika infection since the time the 27-year-old man left the hospital, Phu Yen’s health department said on Wednesday.

According to the General Department of Preventive Medicine under the Ministry of Health, the Zika virus type in Vietnam is less infectious and less likely to cause microcephaly than its counterpart in the Americas.

The Zika virus disease, or Zika fever, is caused by the mosquito-borne Zika virus, the symptoms of which can include mild fever, skin rashes, conjunctivitis, muscle and joint pain, malaise or headaches that normally last for two to seven days, according to the World Health Organization (WHO).

According to the U.S. Centers for Disease Control and Prevention, the virus can be transmitted via two species of mosquitoes, theAedes aegypti and the Aedes albopictus, both infamous for spreading dengue, chikungunya, and other viruses.

The WHO has confirmed that there is a strong scientific consensus that Zika can cause microcephaly in babies, a birth defect characterized by unusually small heads that can result in developmental problems.

The health organization also said that there are research-based results showing that the virus is also a cause of the Guillain-Barré syndrome – a neurological disorder that could lead to paralysis and death.