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NDV Induced Immune-Pathology in Chickens

NDV Induced Immune-Pathology in Chickens

Hu Zenglei1 and Xiufan Liu1, 2*


1Animal Infectious Disease Laboratory, School of Veterinary Medicine; 2Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu 225009, China.

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Virulence and pathogenicity of Newcastle disease virus (NDV) is one of the major determinants for the clinicopathological manifestations in infected hosts. Recent studies showed that the host innate immune responses to infection play important role in the pathologenesis of NDV, and correlate with the severity of the clinical disease. Virulent strains of different genotypes induce distinct pathological manifestations in chicken organs, especially in lymphoid tissues. Genotype VIId of NDV, which is currently endemic in many countries of Asian and Middle East, replicates at a significantly higher level, induces more potent innate antiviral and inflammatory response, and causes more severe damages in lymphoid tissues when compared with virulent viruses of other genotypes. Therefore, severe pathology in immune organs, caused by genotype VIId of NDV, is associated with high levels of virus replication and an intense innate immune response.


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Hosts and Viruses


Vol. 8, Iss. 1, Pages 1-22


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