title: Standardization of the nomenclature for genetic characteristics of wild-type rubella viruses.
abstract: The main goals of the meeting--to provide guidelines for describing the major genetic groups of rubella virus and to establish uniform genetic analysis protocols--were achieved. Guidelines for describing the genotypes as an operational taxonomic group consisted of the designation of reference viruses and reference sequences for 7 genotypes of rubella viruses representing 2 clades, and designation of an additional 3 provisional genotypes. Provisional genotype status was given either because reference viruses were not yet available and/or because there was uncharacterized complexity within the genetic group. Uniform analysis protocols recommended the comparison of unknown viral sequences with the complete set of designated reference viruses, and recommended a minimum acceptable sequence window which produced phylogenetic results with high confidence values. A list of literature references about rubella virus phylogeny and molecular epidemiology is available from the WHO Internet site for this report. As additional understanding of the genetic characteristics of wild-type rubella viruses is achieved, updates to the recommended nomenclature will be made and published in the Weekly Epidemiological Record.
mesh_terms: D005838:Genotype; D006801:Humans; D017720:Molecular Epidemiology; D010802:Phylogeny; D011159:Population Surveillance; D012409:Rubella / Q000453:epidemiology / Q000517:prevention & control / Q000821:virology*; D012412:Rubella virus / Q000145:classification / Q000235:genetics*; D009626:Terminology as Topic; D014944:World Health Organization