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Evaluation of air samplers and filter materials for collection and recovery of airborne norovirus

Uhrbrand K, Koponen IK, Schultz AC, et al. Evaluation of air samplers and filter materials for collection and recovery of airborne norovirus. Journal of Applied Microbiology 2018;124(4):990-1000.
Date: 2018
Scientific Article
AIMS: The aim of this study was to identify the most efficient sampling method for quantitative PCR-based detection of airborne human norovirus (NoV). METHODS AND RESULTS: A comparative experiment was conducted in an aerosol chamber using aerosolised murine norovirus (MNV) as a surrogate for NoV. Sampling was performed using a nylon (NY) filter in conjunction with four kinds of personal samplers; Gesamtstaubprobenahme sampler (GSP), Triplex-cyclone sampler (TC), 3-piece closed-faced Millipore cassette (3P) and a 2-stage NIOSH cyclone sampler (NIO). In addition, sampling was performed using the GSP sampler with four different filter types; NY, polycarbonate (PC), polytetrafluoroethylene (PTFE) and gelatine (GEL). The sampling efficiency of MNV was significantly influenced by both sampler and filter type. The GSP sampler was found to give significantly (P<0.05) higher recovery of aerosolised MNV than 3P and NIO. A higher recovery was also found for GSP compared with TC, albeit not significantly. Finally, recovery of aerosolised MNV was significantly (P<0.05) higher using NY than PC, PTFE and GEL filters. CONCLUSIONS: The GSP sampler combined with a nylon filter was found to be the best method for personal filter-based sampling of airborne NoV. SIGNIFICANCE AND IMPACT OF THE STUDY: The identification of a suitable NoV air sampler is an important step towards studying the association between exposure to airborne NoV and infection. This article is protected by copyright. All rights reserved
Updated  25.09.2017
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