Comparison of protection and viral shedding following vaccination with Newcastle disease virus strains of different genotypes used in vaccine formulation.

Abstract excerpt

Newcastle disease (ND) is a devastating disease and cause high t mortality and morbidity in poultry and nonpoultry avian species worldwide. An intensive vaccination program against ND is a routine practice in Pakistan like other developing countries, but still frequent outbreaks have been recorded in the field. In this study, vaccines prepared from ND viruses corresponding to four different genotypes were...

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