Earlier, poultry died in mass with unknown cause in PhiengLuong village, Dai Dong commune, Trang Dinh district.
After testing samples from the dead fowls, the agency foundthat they are positive to A/H5N6 virus. The local authorities later destroyedthose suspected of virus infection.
The agency requested the public to stay away from sick anddead fowls and their droppings.
It also asked local authorities to spray chemicals todecontaminate farms while banning the sale, slaughter and transportation of poultryproducts in affected areas.-VNA