Evaluation Of Avian Influenza Vaccines Used In Egypt

This study was carried out to evaluate two types of AI vaccines (H5N1 and H5N2) and immune responses in different ages of vaccination.Three hundred and fifty, broiler chicks, were used in this study to evaluate AI H5N2 and H5N1 AI vaccines at either day old or 7 days old via S/C injection and were challenged with HP H5N1 AIV with dose 106 / 0.1 ml three weeks after vaccination. The resuTwo hundred and fifty day-old, SASO chicks were used in this study to evaluate AI H5N2 and H5N1 AI vaccines at either 1day old and 21 days old or seven days old and twenty eight days old and were challenged with HP H5N1 AIV with dose 106 / 0.1 ml three we