Breeding environment is full of H5N1 virus

Recent tests of the National Center for Veterinary Diagnosis in Ha Tay show that nearly 100% of the swarms of geese carry the H5N1 strain. In some localities, typically Bac Giang, Hai Phong, Thai Binh, the development is still very complicated, there is no sign of stopping.

According to Mr. Nguyen Van Cam, Deputy Director of the Center for Animal Health Diagnosis, the results of the protection rate on vaccinated poultry in Ha Tay show that the rate of protection on chickens is 85% and ducks. reached 74%. However, the rate of protection in geese is only about 13%.

Ministry of Agriculture and Rural Development asked Ha Tay Veterinary Department to review the technical process of vaccination for geese.

When randomly checking poultry that have not been vaccinated in 2 districts (also of Ha Tay), the Center for Animal Health Diagnosis announced that the proportion of naturally infected ducks with H5N1 virus is up to 12.2%, geese are 2.2%. Meanwhile, the center did not detect H5N1 virus in chickens.

Waterfowl is still the main target of the disease and spread the disease. (Photo: agroviet.gov.vn) He said that the result once again confirmed that the H5N1 virus is circulating widely in breeding environment. . The main object carrying pathogens, making the disease spread is still waterfowl.

In addition, according to the Department of Science and Technology (Ministry of Agriculture and Rural Development), this agency has tried to vaccinate ducks for 1 day old, until the end of July to get results. Particularly for pigeons, ostriches, the immunity rate is low, the protection period is short, especially pigeons only 2-3 months. Therefore, the Ministry of Agriculture and Rural Development advocates only encouraging farmers to self-vaccinate and not deploy on a large scale.

At the meeting of the National Steering Committee for Avian Influenza Prevention this afternoon (June 26), Mr. Bui Quang Anh, Director of the Department of Animal Health, said that while the influenza epidemic was controlled in some localities, it was Some provinces and cities such as Hai Phong, Bac Giang, Thai Binh, and epidemic are still complicated and prolonged and have not shown signs of stopping.

According to the Department of Animal Health, in Quang Nam from June 20, the outbreak has occurred in 2 households raising ducks in Tay Thanh village, Duy Nghia commune, Duy Xuyen district. 105 ducks died out of a flock of 293 (60-65 days old ducks, not vaccinated). Test results from the Region IV Veterinary Agency responded positively to H5N1 influenza virus.

In Bac Giang, at the quarantine of Dong Viet commune, Yen Dung district, on June 25, 220 unidentified ducks were seized without quarantine certificates. The district steering committee has destroyed all of the ducks and implemented disinfection measures.

Currently, there are only 12 provinces with avian influenza under 21 days including Nghe An, Hai Phong, Bac Giang, Can Tho, Ninh Binh, Vinh Phuc, Ha Nam, Quang Nam, Hung Yen, Thai Binh, Ha Tinh and As tall as. Son La and Nam Dinh officially withdrew from the map of provinces with outbreaks.

According to preliminary results of virus circulating surveillance in aquacultural herd, Department of Animal Health also recommended localities not to encourage the development of waterfowl breeding, limiting small-scale breeding. In particular, to vaccinate waterfowl at the incubator before selling and vaccinating ducks before running copper.

Deputy Minister of Agriculture and Rural Development Bui Ba Bong warned that flu is showing signs of recurrence in the South. He noted that localities have thoroughly dealt with ducks that have circulated the virus according to the direction of the Prime Minister.

H.Yen