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The highly pathogenic avian influenza in poultry deadly infectious diseases caused by type A influenza virus, the World Organization for Animal Health (OIE) as required to report the animal diseases. Avian influenza in clinical performance of sub-clinical symptoms, mild respiratory disease, egg drop, and other forms of acute fatal disease. Avian flu into highly pathogenic, pathogenic and non-pathogenic avian influenza three categories according to the different strains pathogenic ability. Highly pathogenic avian influenza was first discovered in Italy in 1878, was a worldwide distribution, mainly purple comb, bleeding, head swelling, tearing, breathing difficulties, becomes foot shin and multiple skin bleeding characteristics of sexually transmitted diseases, subcutaneous edema, conjunctival hemorrhage as well as the entire digestive tract mucosal hemorrhage, necrosis, ulceration. Highly pathogenic avian influenza with its high mortality rate, spread fast, supplies poultry industry caused a devastating blow to a more prominent case of bird flu since 1997, the people of Hong Kong, its public health significance. China since 2004, the country began, poultry herds of compulsory vaccination, is an important measure for the prevention and control of avian influenza popular migratory birds and waterfowl in the spread of avian flu has a very important role in the case of large area concentrated immune and viruses antigenic drift and antigenic mutations, many factors affect the immune level of antibody production after immunization still need to be monitored and analyzed, which provide a useful reference for subsequent compulsory vaccination work and avian flu prevention and control work. Tongan District, Xiamen's major livestock breeding area since 2004 to strengthen the major animal disease national compulsory vaccination, compulsory vaccination region herds birds carry the highly pathogenic avian influenza, is a better understanding of the compulsory vaccination Tongan District protection of the highly pathogenic avian influenza, especially zoning flocks antibody, the generation-scale farms, author of Tongan District the backyard farmers investigation, the comprehensive geographical divisions and natural barriers sampling of chickens, ducks and other poultry serum antibody testing, blood samples were collected from the streets of the District, Datong, Ting Town, five significant town Hongtang 11 towns (street, field), 964 were collected from households, and collect samples for 6792 were, in which the scale farms 252 households, blood samples 4625 712, backyard farmers, blood samples 2167. Blood sample collection to separate the serum antibody titer of hemagglutination and hemagglutination inhibition test detection scale field antibodies pass rate of 93.7% (4333/4625), backyard farmers antibodies pass rate of 93.2% (2019 / 2167), the average antibody pass rate of 93.5%, to prove national compulsory vaccination policy in Tongan District implementation, good breeding environment, a higher level of protection of flocks antibody; statistics by year of monitoring results, the average annual pass rates in The results show that more than 90% the Tongan District compulsory vaccination in the past five years, in steady state, the region's poultry farming in the security state; statistical classification of the monitoring results in accordance with the breeding patterns, results: scale farms and backyard farmers antibody qualified rates were 93.7%, 93.2%, the difference was not significant; test results in accordance with the type of classified statistics, chicken, duck antibodies pass rate of 95.3%, 91.8%, the chicken antibody levels higher than waterfowl.
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