The recent outbreak was found at a farm in Yen Hong village, Y Yen district on November 22. From November 16-18, more than 200 out of 1,500 ducks died at another farm in Yen My village, Y Yen district. No poultry has been vaccinated yet.

The local authorities have culled nearly 1,600 birds in Nam Dinh.

According to the Department of Animal Health, since the last bird flu outbreak in July, 2010, Nam Dinh is the first province which has reported a recurrence of the virus.

At present, the demand for poultry is high so the disease is likely to spread widely.