Molecular characterization of Newcastle disease virus (genotype VII) from broiler chickens in Egypt

This study indicated that though intensive ND vaccination programs using LaSota like strains, the vNDV strains of genotype VII are still circulating in the field causing significant economic losses. The genetic variation between the used vaccine strains and the circulating NDV viruses may explain the inability of the currently used vaccines to protect chicken against vNDV genotype VII. Further studies are needed to screen the protection of the currently used vaccines against recently isolated vNDV strains
Source: Beni Suef University Journal of Basic and Applied Sciences - Category: Science Source Type: research