Molecular Epidemiology of Echovirus 18 Circulating in Mainland China from 2015 to 2016
Abstract Echovirus 18 (E18), a serotype of Enterovirus B (EV-B) species, is an important pathogen in aseptic meningitis. E18 had rarely been detected in mainland China, but became the predominant pathogen associated with viral encephalitis (VE) and meningitis in Hebei province for the first time in 2015. To investigate the molecular epidemiology and genetic characteristics of E18 in mainland China, sixteen E18 strains from patient throat swabs with hand, foot, and mouth disease (HFMD) in six provinces in China collected between 2015 and 2016, and four E18 strains isolated from 18 patient cerebrospinal fluid specimens with VE in Hebei Province in 2015 were obtained and sequenced. Combined with the sequences from the GenBank database, we performed an extensive genetic analysis. Phylogenetic analysis of VP1 gene sequences revealed that all E18 strains from mainland China after 2015 belonged to subgenotype C2. There were no obvious specific differences in phylogenetic and variation analyses of E18 genome sequences between HFMD and VE/meningitis strains. Potential multiple recombination may have occurred in the 5′-untranslated region and in the P2 and P3 nonstructural protein-encoding regions of E18 strains from China. The current E18 strains were potential multiple-recombinant viruses. Overall, these findings supported that E18 caused HFMD, VE, and meningitis, although there were no significant associations between clinical features and viral genomic characteristics..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019 |
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| Erschienen: |
2019 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:34 |
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| Enthalten in: |
Virologica Sinica - 34(2019), 1 vom: Feb., Seite 50-58 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Chen, Xiangpeng [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Echovirus 18 (E18) |
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| Anmerkungen: |
© Wuhan Institute of Virology, CAS 2019 |
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| doi: |
10.1007/s12250-018-0080-8 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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SPR02503104X |
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| 520 | |a Abstract Echovirus 18 (E18), a serotype of Enterovirus B (EV-B) species, is an important pathogen in aseptic meningitis. E18 had rarely been detected in mainland China, but became the predominant pathogen associated with viral encephalitis (VE) and meningitis in Hebei province for the first time in 2015. To investigate the molecular epidemiology and genetic characteristics of E18 in mainland China, sixteen E18 strains from patient throat swabs with hand, foot, and mouth disease (HFMD) in six provinces in China collected between 2015 and 2016, and four E18 strains isolated from 18 patient cerebrospinal fluid specimens with VE in Hebei Province in 2015 were obtained and sequenced. Combined with the sequences from the GenBank database, we performed an extensive genetic analysis. Phylogenetic analysis of VP1 gene sequences revealed that all E18 strains from mainland China after 2015 belonged to subgenotype C2. There were no obvious specific differences in phylogenetic and variation analyses of E18 genome sequences between HFMD and VE/meningitis strains. Potential multiple recombination may have occurred in the 5′-untranslated region and in the P2 and P3 nonstructural protein-encoding regions of E18 strains from China. The current E18 strains were potential multiple-recombinant viruses. Overall, these findings supported that E18 caused HFMD, VE, and meningitis, although there were no significant associations between clinical features and viral genomic characteristics. | ||
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