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A nested real-time PCR assay has an increased sensitivity suitable for detection of viruses in aerosol studies

Perrott, Phillipa, Smith, Greg A., Ristovski, Zoran, Harding, Robert M., & Hargreaves, Megan (2009) A nested real-time PCR assay has an increased sensitivity suitable for detection of viruses in aerosol studies. Journal of Applied Microbiology, 106(5), pp. 1438-1447.

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Abstract

Aims: Influenza is commonly spread by infectious aerosols; however, detection of viruses in aerosols is not sensitive enough to confirm the characteristics of virus aerosols. The aim of this study was to develop an assay for respiratory viruses sufficiently sensitive to be used in epidemiological studies. Method: A two-step, nested real-time PCR assay was developed for MS2 bacteriophage, and for influenza A and B, parainfluenza 1 and human respiratory syncytial virus. Outer primer pairs were designed to nest each existing real-time PCR assay. The sensitivities of the nested real-time PCR assays were compared to those of existing real-time PCR assays. Both assays were applied in an aerosol study to compare their detection limits in air samples. Conclusions: The nested real-time PCR assays were found to be several logs more sensitive than the real-time PCR assays, with lower levels of virus detected at lower Ct values. The nested real-time PCR assay successfully detected MS2 in air samples, whereas the real-time assay did not. Significance and Impact of the Study: The sensitive assays for respiratory viruses will permit further research using air samples from naturally generated virus aerosols. This will inform current knowledge regarding the risks associated with the spread of viruses through aerosol transmission.

Impact and interest:

10 citations in Scopus
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10 citations in Web of Science®

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ID Code: 29270
Item Type: Journal Article
Additional URLs:
Keywords: aerosolization, bacteriophage, PCR, respiratory virus
DOI: 10.1111/j.1365-2672.2008.04119.x
ISSN: 1364-5072
Subjects: Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > MICROBIOLOGY (060500) > Virology (060506)
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > School of Life Sciences
Past > Schools > School of Physical & Chemical Sciences
Copyright Owner: Copyright 2009 The Society for Applied Microbiology
Copyright Statement: The definitive version is available at www3.interscience.wiley.com
Deposited On: 14 Dec 2009 11:18
Last Modified: 01 Mar 2012 00:03

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