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Journal of Clinical Microbiology, October 2001, p. 3678-3683, Vol. 39, No. 10
Centro Nacional de Microbiología,
Instituto de Salud Carlos III, 28220 Majadahonda,
Madrid,1 and Estación
Biológica de Doñana, Consejo Superior de Investigaciones
Científicas, 41013 Seville,2
Spain
Received 31 January 2001/Returned for modification 5 February
2001/Accepted 23 July 2001
Brain analysis cannot be used for the investigation of active
lyssavirus infection in healthy bats because most bat species are
protected by conservation directives. Consequently, serology remains
the only tool for performing virological studies on natural bat
populations; however, the presence of antibodies merely reflects past
exposure to the virus and is not a valid marker of active infection.
This work describes a new nested reverse transcription (RT)-PCR
technique specifically designed for the detection of the European bat
virus 1 on oropharyngeal swabs obtained from bats but also able to
amplify RNA from the remaining rabies-related lyssaviruses in brain
samples. The technique was successfully used for surveillance of a
serotine bat (Eptesicus serotinus) colony involved in a
case of human exposure, in which 15 out of 71 oropharyngeal swabs were
positive. Lyssavirus infection was detected on 13 oropharyngeal swabs
but in only 5 brains out of the 34 animals from which simultaneous
brain and oropharyngeal samples had been taken. The lyssavirus involved
could be rapidly identified by automatic sequencing of the RT-PCR
products obtained from 14 brains and three bat oropharyngeal swabs. In
conclusion, RT-PCR using oropharyngeal swabs will permit screening of
wild bat populations for active lyssavirus infection, for research or
epidemiological purposes, in line not only with conservation policies
but also in a more efficient manner than classical detection techniques
used on the brain.
0095-1137/01/$04.00+0 DOI: 10.1128/JCM.39.10.3678-3683.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Screening of Active Lyssavirus Infection in Wild Bat
Populations by Viral RNA Detection on Oropharyngeal Swabs
*
Corresponding author. Mailing address: Centro Nacional
de Microbiología, Instituto de Salud Carlos III, Ctra.
Majadahonda-Pozuelo s/n, 28220 Majadahonda, Madrid, Spain. Phone:
34-91-5097901. Fax: 34-91-5097966. E-mail:
jeecheva{at}isciii.es.
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