Virulent NDV genotypes were repeatedly isolated from pigeons.Evidence of epidemiological links among viruses isolated from various locations.Distinct phylogenetic branches suggest separate, simultaneous evolution of NDVs.Study information could be helpful in the development of an effective vaccine.
Keywords: Newcastle disease virus; Pakistan; geographic distribution; phylogenetic analysis; pigeon; sub-genotypes XXI.1.1, XXI.1.2, VII.2.