Development of real-time PCR to detect oral vaccine-like poliovirus and its application to environmental surveillance
2014
Abstract In order to perform environmental surveillance to track oral poliovirus vaccine-like poliovirus sensitively and conveniently, real-time PCR was developed and applied to a raw sewage concentrate. The real-time PCR method detected 0.01–0.1 TCID 50 of 3 serotypes of Sabin strain specifically. The method also detected the corresponding serotypes of oral poliovirus vaccine-like poliovirus specifically, but detected neither wild poliovirus, except Mahoney for type 1 and Saukett for type 3, nor other enteric viruses, as far as examined. When real-time PCR was applied to environmental surveillance, the overall agreement rates between real-time PCR and the cell culture were 83.3% for all serotypes. Since real-time PCR has the advantages of rapid detection of viruses and minimum requirement of sampling volume as compared with ordinary cell culture, it is suitable to monitor oral poliovirus vaccine-like poliovirus in the environment, especially in areas where an oral vaccine is being replaced by an inactivated vaccine.
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