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Evaluation of the bag-mediated filtration system as a novel tool for poliovirus environmental surveillance: Results from a comparative field study in Pakistan.
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- Author(s): Zhou, Nicolette Angela; Fagnant-Sperati, Christine Susan; Shirai, Jeffry Hiroshi; Sharif, Salmaan; Zaidi, Sohail Zahoor; Rehman, Lubna; Hussain, Jaffer; Agha, Rahim; Shaukat, Shahzad; Alam, Masroor; Khurshid, Adnan; Mujtaba, Ghulam; Salman, Muhammed; Safdar, Rana Muhammed; Mahamud, Abdirahman; Ahmed, Jamal; Khan, Sadaf; Kossik, Alexandra Lynn; Beck, Nicola Koren; Matrajt, Graciela
- Source:
PLoS ONE; 7/16/2018, Vol. 13 Issue 7, p1-15, 15p- Subject Terms:
- Source:
- Additional Information
- Abstract: Poliovirus (PV) environmental surveillance (ES) plays an important role in the global eradication program and is crucial for monitoring silent PV circulation especially as clinical cases decrease. This study compared ES results using the novel bag-mediated filtration system (BMFS) with the current two-phase separation method. From February to November 2016, BMFS and two-phase samples were collected concurrently from twelve sites in Pakistan (n = 117). Detection was higher in BMFS than two-phase samples for each Sabin-like (SL) PV serotype (p<0.001) and wild PV type 1 (WPV1) (p = 0.065). Seventeen sampling events were positive for WPV1, with eight discordant in favor of BMFS and two in favor of two-phase. A vaccine-derived PV type 2 was detected in one BMFS sample but not the matched two-phase. After the removal of SL PV type 2 (SL2) from the oral polio vaccine in April 2016, BMFS samples detected SL2 more frequently than two-phase (p = 0.016), with the last detection by either method occurring June 12, 2016. More frequent PV detection in BMFS compared to two-phase samples is likely due to the greater effective volume assayed (1620 mL vs. 150 mL). This study demonstrated that the BMFS achieves enhanced ES for all PV serotypes in an endemic country. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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