title: Characterization of mumps virus isolated in saitama prefecture, Japan, by sequence analysis of the SH gene.
abstract: Mumps virus (MuV) strains isolated from cerebrospinal fluid and throat swabs from patients in Saitama Prefecture and Tokyo, Japan, from 1997 to 2000 were examined by analyzing the SH gene nucleotide sequence (316-nt). Eighteen of the 20 strains studied were divided into three genotypes, recognized as B, G, and H in previous reports. Two genotypes (G and H) are believed to be new in Japan. Two of the 20 strains belonged to none of the previously reported genotypes (A-I), but were closely related to two known strains, MP94-H and Loug1/UK97. We propose that the two strains identified in this study together with the previously reported strains, MP94-H and Loug1/UK97, form a new genotype, designated J, based on the divergence of the SH gene nucleotide sequences between these four strains and other strains reported (genotypes A-I). Our results also suggest that more than two genotypes circulated in Saitama Prefecture from 1997 to 1999, but only one, genotype G, was in evidence in 2000. Genotype B was earlier reported as the predominant strain in Japan, but it became undetectable by the year 2000. These results provide important epidemiological data on mumps in Japan.
authors.affiliation: Virus Division, Saitama Institute of Public Health, Japan. virus31@f3.dion.ne.jp
authors.forename: K
authors.initials: K
authors.lastname: Uchida
authors.forename: M
authors.initials: M
authors.lastname: Shinohara
authors.forename: S
authors.initials: S
authors.lastname: Shimada
authors.forename: Y
authors.initials: Y
authors.lastname: Segawa
authors.forename: Y
authors.initials: Y
authors.lastname: Hoshino
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008582:Meningitis, Aseptic / Q000453:epidemiology / Q000821:virology; D008969:Molecular Sequence Data; D009107:Mumps / Q000134:cerebrospinal fluid / Q000453:epidemiology* / Q000821:virology; D009109:Mumps virus / Q000737:chemistry / Q000145:classification / Q000235:genetics*; D010802:Phylogeny; D012367:RNA, Viral / Q000737:chemistry / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D014764:Viral Proteins / Q000737:chemistry / Q000145:classification / Q000235:genetics*
chemical_list: D018076:DNA, Complementary; D012367:RNA, Viral; D014764:Viral Proteins; C067386:small hydrophobic protein, Mumps virus