Full Genome Sequences of Two Reticuloendotheliosis Viruses Contaminating Commercial Vaccines

Abstract excerpt

Reticuloendotheliosis virus (REV) fragments are a common contaminant in some commercial vaccines such as fowl poxvirus (FPV) and Marek's disease virus. However, only those strains integrating or containing a near-intact REV provirus are more likely to cause problems in the field. We confirm here, by PCR assays and animal experiments, that vaccines against FPV and herpes virus of turkeys were contaminated with...

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