Mr. Hoang Van Nam, director of the Department of Animal Health, Ministry of Agriculture and Rural Development, said that bird flu is endemic in Ha Tinh and Hai Phong, Nam Dinh and Ninh Binh, Bac Kan, Quang Ngai and Bar Chemistry, as more than 180,000 birds get sick, die or be destroyed. Worryingly through epidemiological surveillance, have identified a new type of the H5N1 avian influenza virus, avian influenza virus was named 2.3.2.1 C, high virulence. 2 months ago, there were several information on this new group of viruses appeared in China, highly virulent, deadly ability is also very high. This group of viruses has been in Vietnam. Currently the Ministry has asked the scientists attached to the quick implementation of the experiment, testing whether the bird flu vaccine is being used in effect for this virus group or not. /.