The southern central province of Ninh Thuan officially announced on May 13 that swallows raised in Phan Rang-Thap Cham city's Dao Long district are free of bird flu.

Over 4,000 swallows raised by the Yen Viet Trading and Service Co. Ltd. in Thong Nhat street died in late March. Samples of the dead birds were found to contain the H5N1 virus.

The provincial People's Committee announced the epidemic on April 19 and took measures to disinfect the breeding area.-VNA