HANOI, May 15 (Xinhua) — Another Mekong Delta province Vinh Long of Vietnam was confirmed of being hit by the bird flu, (Snip) The bird flu broke out on a local farm on Wednesday, killing 250 out of a flock of 1,100 ducks, said the report.

Duck samples tested by the provincial animal health bureau were positive for the H5N1 virus, said provincial health officials, (Snip) Local animal health authorities had been implementing measures to curb the spread of the bird flu virus to nearby areas, including the culling of the remaining ducks, said the department.

Currently, Vietnam reports four provinces hit by avian flu including two central provinces of Thanh Hoa and Quang Ngai and two Mekong Delta provinces of Dong Thap and the newly-confirmed Vinh Long, said the department.

Vietnam has reported five human cases of bird flu so far this year, and four of them died.