Patent ID: 7204990

Claim:
A chimeric cytomegalovirus (CMV) virus which comprises: (a) a polynucleotide sequence of a high-passage Towne genome from nucleotides 1 to 3799; (b) a polynucleotide sequence of a Toledo genome from nucleotides 15750 to 67568; (c) a polynucleotide sequence of a high-passage Towne genome from nucleotides 81647 to 170499; (d) a polynucleotide sequence of a Toledo genome from nucleotides 175069 to 203136; and (e) a polynucleotide sequence of a high passage Towne genome from nucleotides 205803 to S-term, wherein the high-passage Towne genome has been passaged at least 50 times and wherein the nucleotide number of the Towne and Toledo genomes is according to the numbering convention of the AD169 genome.