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Journal of Clinical Microbiology, August 2001, p. 2779-2783, Vol. 39, No. 8
Infectious Diseases
Unit1 and Departments of
Microbiology2 and Respiratory
Medicine,3 Alfred Hospital, Prahran 3181, and
Victorian Infectious Diseases Reference Laboratory, North
Melbourne 3051,4 Victoria, Australia
Received 8 January 2001/Returned for modification 18 March
2001/Accepted 13 May 2001
A multiplex reverse transcription-PCR-enzyme hybridization assay
(RT-PCR-EHA; Hexaplex; Prodesse Inc., Waukesha, Wis.) was used for the
simultaneous detection of human parainfluenza virus types 1, 2, and 3, influenza virus types A and B, and respiratory syncytial virus types A
and B. One hundred forty-three respiratory specimens from 126 patients
were analyzed by RT-PCR-EHA, and the results were compared to those
obtained by conventional viral culture and immunofluorescence (IF)
methods. RT-PCR-EHA proved to be positive for 17 of 143 (11.9%)
specimens, whereas 8 of 143 (5.6%) samples were positive by viral
culture and/or IF. Eight samples were positive by both RT-PCR-EHA and
conventional methods, while nine samples were RT-PCR-EHA positive and
viral culture and IF negative. Eight of the nine samples with
discordant results were then independently tested by a different
multiplex RT-PCR assay for influenza virus types A and B, and all eight
proved to be positive. In comparison to viral culture and IF methods, RT-PCR-EHA gave a sensitivity and a specificity of 100 and 93%, respectively. Since RT-PCR-EHA was able to detect more positive samples, which would otherwise have been missed by routine methods, we
suggest that this multiplex RT-PCR-EHA provides a highly sensitive and
specific means of diagnostic detection of major respiratory viruses.
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.8.2779-2783.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Comparison of a Multiplex Reverse
Transcription-PCR-Enzyme Hybridization Assay with Conventional Viral
Culture and Immunofluorescence Techniques for the Detection of
Seven Viral Respiratory Pathogens
*
Corresponding author. Mailing address: Infectious
Diseases Unit, Alfred Hospital, Commercial Rd., Prahran, Victoria,
Australia, 3181. Phone: 61-3-9276 3516. Fax: 61-3-9276 3424. E-mail:
L.Liolios{at}alfred.org.au.
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