Monitoring Of Immune Antibody And Etiological Detection Of Avian Influenza In Inner Mongolia Autonomous Region In 2017

Avian influenza is an acute,hot,highly contagious disease of poultrycaused by virus infection.In China,the avian influenza is classified asthe firstkind of epidemic disease,which can not only cause huge economic loss of poultry industry but also threat people's health.At present,the main types of avian influenza virus emerged in various parts of China are H5 subtype and H7 subtype.Since 2013,people in China have successively been infected with H7N9 subtype influenza virus,to which the government has attached great importance.In recent years,the epidemic situation of avian influenza has also occasionally occurred in several areas in the Inner Mongolia.All various cities have been taking comprehensive prevention and control measures in which vaccination is dominant and have obtained certain effect.To understand and master the immune effect of avian influenza vaccination and wild virus infection status in Inner Mongolia in 2017,the hemagglutination inhibition test and fluorescence RT-PCR test were used to conduct immune antibody monitoring and etiological detection of H5 subtype and H7 subtype in 12 cities in the autonomous region.The results showed thatthe overall average passing rate of immune antibody against H5 subtype in spring prevention and control was 81.71%,higher than the national standard.Besides,due to the late immunization time in several cities,the passing rate of immune antibody failed to meet the national standard.No H7 subtype antibodies were detected in chickens which had not been vaccinated with the H7 subtype vaccine,indicating that there was virtually no wild virus infection of H7 subtype avian influenza.In the fall prevention and control,the overall average passing rate of immunity antibody against H5 subtype was 78.14%,higher than the national standard.The passing rate of immunity antibody against H7 subtype was 48.34%,lower than the national standard.Through analysis.In the spring and fall prevention and control,the collected double swabs of throat and cloaca were etiological negative all,indicating that the possibility of wild virus infection of avian influenza was extremely low.The research results of this paper would contributed certain reference value for the prevention and control of avian influenza in Inner Mongolia.