Evidence for recombination between vaccine and wild-type mumps virus strains.
Recombination of mumps virus (MuV) has rarely been reported. In this study, phylogenetic and recombination analyses were performed on 30 complete MuV genomes, including 17 vaccine and 13 wild-type strains. One potentially significant recombination event was found to have occurred between the lineage represented by the vaccine strain L3/Russia/Vector (AY508995) as the minor parent and wild MuV strain Drag94 (AY669145) as the major parent, and this led to a recombinant, 9218/Zg98 (EU370206), a wild-type MuV strain isolated from a 3-year-old boy with parotitis. In summary, we found a recombinant of MuV derived from vaccine and wild-type MuV strains.