title: Molecular typing and characterization of a new serotype of human enterovirus (EV-B111) identified in China.
abstract: Molecular methods, based on sequencing the region encoding the complete VP1 or P1 protein, have enabled the rapid identification of new enterovirus serotypes. In the present study, the complete genome of a newly discovered enterovirus serotype, strain Q0011/XZ/CHN/2000 (hereafter referred to as Q0011), was sequenced and analyzed. The virus, isolated from a stool sample from a patient with acute flaccid paralysis in the Tibet region of China in 2000, was characterized by amplicon sequencing and comparison to a GenBank database of enterovirus nucleotide sequences. The nucleotide sequence encoding the complete VP1 capsid protein is most closely related to the sequences of viruses within the species enterovirus B (EV-B), but is less than 72.1% identical to the homologous sequences of the recognized human enterovirus serotypes, with the greatest homology to EV-B101 and echovirus 32. Moreover, the deduced amino acid sequence of the complete VP1 region is less than 84.7% identical to those of the recognized serotypes, suggesting that the strain is a new serotype of enterovirus within EV-B. The virus was characterized as a new enterovirus type, named EV-B111, by the Picornaviridae Study Group of the International Committee on Taxonomy of Viruses. Low positive rate and titer of neutralizing antibody against EV-B111 were found in the Tibet region of China. Nearly 50% of children ≤5 years had no neutralizing antibody against EV-B111. So the extent of transmission and the exposure of the population to this new EV are very limited. This is the first identification of a new serotype of human enterovirus in China, and strain Q0011 was designated the prototype strain of EV-B111.
authors: WHO WPRO Regional Polio Reference Laboratory and Ministry of Health Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.
authors: Yong
authors: Y
authors: Zhang
authors: Tibet Center for Disease Control and Prevention, Lhasa City, Tibet Autonomous Region, People's Republic of China.
authors: Mei
authors: M
authors: Hong
authors: WHO WPRO Regional Polio Reference Laboratory and Ministry of Health Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.
authors: Qiang
authors: Q
authors: Sun
authors: WHO WPRO Regional Polio Reference Laboratory and Ministry of Health Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.
authors: Shuangli
authors: S
authors: Zhu
authors: Tibet Center for Disease Control and Prevention, Lhasa City, Tibet Autonomous Region, People's Republic of China.
authors: Tsewang
authors: WHO WPRO Regional Polio Reference Laboratory and Ministry of Health Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.
authors: Xiaolei
authors: X
authors: Li
authors: WHO WPRO Regional Polio Reference Laboratory and Ministry of Health Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.
authors: Dongmei
authors: D
authors: Yan
authors: WHO WPRO Regional Polio Reference Laboratory and Ministry of Health Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.
authors: Dongyan
authors: D
authors: Wang
authors: WHO WPRO Regional Polio Reference Laboratory and Ministry of Health Key Laboratory for Medical Virology, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China. Electronic address: wenbo_xu1@aliyun.com.
authors: Wenbo
authors: W
authors: Xu
mesh_terms: D000914:Antibodies, Viral / Q000097:blood; D002675:Child, Preschool; D016000:Cluster Analysis; D004770:Enterovirus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification*; D004769:Enterovirus Infections / Q000453:epidemiology / Q000821:virology*; D005260:Female; D016679:Genome, Viral; D006801:Humans; D007223:Infant; D008297:Male; D008969:Molecular Sequence Data; D058889:Molecular Typing; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D016036:Seroepidemiologic Studies; D012703:Serotyping; D018609:Tibet / Q000453:epidemiology
chemical_list: D000914:Antibodies, Viral; D012367:RNA, Viral
keywords: Characterization; EV-B111; New serotype enterovirus; Seroepidemiology