Protection and antibody response caused by turkey herpesvirus vector Newcastle disease vaccine.

Newcastle disease (ND) is prevalent worldwide and causes significant clinical and economic losses to the poultry industry. Current vaccine programs using live attenuated vaccines and inactivated vaccines have limitations, and new vaccines with distinct features are needed. To offer an alternative solution to control ND, a turkey herpesvirus vector Newcastle disease vaccine (HVT/ND) expressing the fusion gene of Newcastle disease virus (NDV) has been developed.

Identification of minimal predictors of avian pathogenic Escherichia coli virulence for use as a rapid diagnostic tool.

To identify traits that predict avian pathogenic Escherichia coli (APEC) virulence, 124 avian E. coli isolates of known pathogenicity and serogroup were subjected to virulence genotyping and phylogenetic typing. The results were analyzed by multiple-correspondence analysis.