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Journal of Clinical Microbiology, Nov 1997, 2762-2766, Vol 35, No. 11
PR Heaton, P Johnstone, LM McElhinney, R Cowley, E O'Sullivan and JE Whitby
A heminested reverse transcriptase PCR (hnRT-PCR) protocol which is rapid
and sensitive for the detection of rabies virus and rabies- related viruses
is described. Sixty isolates from six of the seven genotypes of rabies and
rabies-related viruses were screened successfully by hnRT-PCR and Southern
blot hybridization. Of the 60 isolates, 93% (56 of 60) were positive by
external PCR, while all isolates were detected by heminested PCR and
Southern blot hybridization. We also report on a comparison of the
sensitivity of the standard fluorescent-antibody test (FAT) for rabies
antigen and that of hnRT-PCR for rabies viral RNA with degraded tissue
infected with a genotype 1 virus. Results indicated that FAT failed to
detect viral antigen in brain tissue that was incubated at 37 degrees C for
greater than 72 h, while hnRT-PCR detected viral RNA in brain tissue that
was incubated at 37 degrees C for 360 h.
Copyright © 1997 by the American Society for Microbiology. All rights reserved.
Heminested PCR assay for detection of six genotypes of rabies and rabies-related viruses [In Process Citation]
Department of Virology, Veterinary Laboratories Agency, Addlestone, Surrey, United Kingdom. pheaton@hgmp.mrc.ac.uk
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