Seroprevalence of H۵ and H۷ Subtypes of avian influenza viruses in rural domestic poultry, Iran

BACKGROUND AND OBJECTIVESInfluenza is one of the most important infectious viral diseases of birds, which causes huge economic losses to the poultry industry of countries every year. In recent years, H۵ and H۷ subtypes of influenza viruses (high pathogenic avian influenza) have been detected in Iran. Backyard poultry can cause spread these viruses to industrial poultry as reservoirs and vectors. Therefore, the aim of this study was to survey seroprevalence of H۵ and H۷ subtypes of avian influenza viruses in rural domestic poultry of Ardabil province, northwest of Iran.MATERIALS AND METHODSThis cross-sectional study was conducted from September to December of ۲۰۱۵. In this study, ۹۴۳ blood serum samples were randomly collected from backyard poultry of ۴۰ villages. The hemagglutination inhibition (HI) test was performed on the serum samples according to Iran Veterinary Organization (IVO) protocol to detect H۵ and H۷ subtypes of influenza virus.RESULTS AND DISCUSSIONAll the examined sera were negative for H۵N۱, H۵N۲, H۷N۱ and H۷N۷ subtypes of influenza virus. The results of this study show no seroprevalence of H۵ and H۷ subtypes of influenza virus in rural domestic poultry of Ardabil province.CONCLUSIONActive surveillance must be carried out in rural domestic poultry.

کلیدواژه ها:

H۵ and H۷ viruses ، rural domestic poultry ، HI