Genetic characterization of poliovirus isolates from environmental sewage surveillance in Shandong, 2010 / 病毒学报
Chinese Journal of Virology
;
(6): 337-341, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-286032
ABSTRACT
To investigate the genetic characteristics of poliovirus isolates from environmental sewage surveillance in Shandong province, we collected sewage samples in Jinan and Linyi City. Serotyping and VP1/ 3D sequencing were performed on polioviruses isolated from the concentrated sewage samples, and VP1 mutation and recombination were analyzed. Thirty-two of sewage samples were collected, and polioviruses were detected in 10 of the samples with a positive rate of 31.3%. Eighteen Sabin strains were isolated including three type 1, nine type 2, and six type 3 polioviruses, and the number of nucleotide substitutions in VP1 coding region varied from 0 to 4. Recombination was found in three Sabin 2 and four Sabin 3 polioviruses. Analysis of neurovirulence sites of VP1 revealed that one Sabin 1 vaccine strain had a nucleotide change of A to G at nt 2749, one Sabin 2 strain had a nucleotide change of A to G at nt 2908, three Sabin 2 strains had a nucleotide change of U to C at nt 2909, and all six Sabin 3 strains had a nucleotide change of C to U at nt 2493. Poliovirus vaccine strains could be isolated from environmental sewage with a high rate of gene recombination and back mutation of neuvirulence-associated sites. None of wild-type poliovirus or vaccine-derived poliovirus was detected.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Poliomyelitis
/
Sewage
/
Virology
/
Molecular Sequence Data
/
Base Sequence
/
China
/
Population Surveillance
/
Amino Acid Sequence
/
Poliovirus
/
Genetics
Type of study:
Screening study
Limits:
Humans
Country/Region as subject:
Asia
Language:
Chinese
Journal:
Chinese Journal of Virology
Year:
2011
Type:
Article
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