Investigation on Avian influenza among the Traditional Back yard poultry in Wou – Southern Sudan

Abstract

This study was conducted to investigate avian influenza among the traditional back yard poultry in Southern Sudan – Wau during 2007 2008. Blood samples were collected from chickens in back yard from ten villages around Wau. The serum samples were separated from the blood samples were tested using indirect ELISA to detect antibody for avian influenza type A in chicken sera. A total of (207) test serum samples were examined by indirect ELISA and 39 (18.8%) were found positive. The 39 Group specific sera to AI virus were reexamined for the detection of H7 and H AI subtype by HI test using inactivated H7and H5 antigens. The results showed that 7 out of 39( 17.9%) serum samples were found positive to subtype H7 and 1 serum was found positive to subtype H5 . Although the presence of AI subtype H5 and H7 were detected in this study by using specific H5 and H7 antigens haemagglutination test but there was no indication of pathogenical disease virulence of AI infection .