Article
A Chinese Variant Marek’s Disease Virus Strain with Divergence between Virulence and Vaccine Resistance
3 Apr 2017
Abstract excerpt
Marek's disease (MD) virus (MDV) has been evolving continuously, leading to increasing vaccination failure. Here, the MDV field strain BS/15 was isolated from a severely diseased Chinese chicken flock previously vaccinated with CVI988. To explore the causes of vaccination failure, specific-pathogen free (SPF) chickens vaccinated with CVI988 or 814 and unvaccinated controls were challenged with either BS/15 or the...
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