1. Isolation of Vaccine-Like Poliovirus Strains in Sewage Samples From the United Kingdom.
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Majumdar, Manasi, Klapsa, Dimitra, Wilton, Thomas, Akello, Joyce, Anscombe, Catherine, Allen, David, Mee, Edward T., Minor, Philip D., and Martin, Javier
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POLIOMYELITIS vaccines ,SEWAGE ,ENTEROVIRUSES ,SEROTYPES ,VIRUS isolation - Abstract
Background: Environmental surveillance (ES) is a sensitive method for detecting human enterovirus (HEV) circulation, and it is used worldwide to support global polio eradication. We describe a novel ES approach using next-generation sequencing (NGS) to identify HEVs in sewage samples collected in London, United Kingdom, from June 2016 to May 2017.Methods: Two different methods were used to process raw sewage specimens: a 2-phase aqueous separation system and size exclusion by filtration and centrifugation. HEVs were isolated using cell cultures and analyzed using NGS.Results: Type 1 and 3 vaccine-like poliovirus (PV) strains were detected in samples collected from September 2016 through January 2017. NGS analysis allowed us to rapidly obtain whole-genome sequences of PV and non-PV HEV strains. As many as 6 virus strains from different HEV serotypes were identified in a single cell culture flask. PV isolates contained only a small number of mutations from vaccine strains commonly seen in early isolates from vaccinees.Conclusions: Our ES setup has high sensitivity for polio and non-PV HEV detection, generating nearly whole-genome sequence information. Such ES systems provide critical information to assist the polio eradication endgame and contribute to the improvement of our understanding of HEV circulation patterns in humans. [ABSTRACT FROM AUTHOR]- Published
- 2018
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