| abstract |
An avian recombinant live vaccine including, as the vector, a Marek's disease virus, particularly HVT, including at least one nucleotide sequence coding for and expressing an antigenic polypeptide of an avian pathogen, and being inserted into the UL13 gene under the control of the immediate early CMV promoter. A multivalent vaccine formula includes at least two such vaccines with differing inserted sequences. |