Hanoi - A 4-year-old boy is reported to have died of the bird flu strain H5N1 in the Mekong Delta, authorities said on Tuesday, the country's first fatality from the virus this year.
The boy died on Thursday in Dong Thap province after being hospitalised with a high fever, the provincial health department said.
Test results at the Pasteur Institute in Ho Chi Minh City revealed he died from H5N1.
He is believed to have contracted the virus from a chicken his grandmother bought and slaughtered in late March.
There have been 123 confirmed human H5N1 infections and 61 deaths in Vietnam since the virus first appeared in the country in 2003, according to World Health Organisation. The last reported case was in February 2012.
The virus can be passed to humans who come in contact with uncooked poultry or poultry faeces.
Vietnam has so far reported no cases of H7N9, a new strain of bird flu which has reportedly killed seven people in China.