| genetic characterization of chinese measles vaccines by analysis of complete genomic sequences. | the complete genomic sequences of two chinese measles vaccine viruses, shanghai-191 (s-191) and changchun-47 (c-47), were determined and compared to the sequences of other measles vaccine strains as well as the prototype measles strain, edmonston wild-type (edwt). compared to edwt, s-191 and c-47 had 49 and 43 nucleotide changes, respectively. these differences were found at 52 nucleotide positions that were not found in other vaccine strains. phylogenetic analysis of the all of the available ge ... | 2009 | 19551837 |