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Journal of Virology, November 2001, p. 10290-10299, Vol. 75, No. 21
Department of Microbiology, Biology School,
University of Barcelona, Barcelona 08028,1 and
Evolutionary Biology Unit, Health and Life Sciences
School, Pompeu Fabra University, Barcelona
08003,2 Catalonia, Spain
Received 23 May 2001/Accepted 7 August 2001
The mechanism of human-to-human transmission of the polyomaviruses
JC virus (JCV) and BK virus (BKV) has not been firmly established with
regard to possible human exposure. JCV and BKV have been found in
sewage samples from different geographical areas in Europe, Africa, and
the United States, with average concentrations of 102 to
103 JCV particles/ml and 101 to 102
BKV particles/ml. Selected polyomavirus-positive sewage samples were
further characterized. The JCV and BKV present in these samples were
identified by sequencing of the intergenic region (the region found
between the T antigen and VP coding regions) of JCV and the VP1 region
of BKV. The regulatory region of the JCV and BKV strains found in
sewage samples presented archetypal or archetype-like genetic
structures, as described for urine samples. The stability (the time
required for a 90% reduction in the virus concentration) of the viral
particles in sewage at 20°C was estimated to be 26.7 days for JCV and
53.6 days for BKV. The presence of JCV in 50% of the shellfish samples
analyzed confirmed the stability of these viral particles in the
environment. BKV and JCV particles were also found to be stable at pH
5; however, treatment at a pH lower than 3 resulted in the detection of
free viral DNA. Since most humans are infected with JCV and BKV, these
data indicate that the ingestion of contaminated water or food could
represent a possible portal of entrance of these viruses or
polyomavirus DNA into the human population.
0022-538X/01/$04.00+0 DOI: 10.1128/JVI.75.21.10290-10299.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Potential Transmission of Human Polyomaviruses
through the Gastrointestinal Tract after Exposure to Virions or
Viral DNA
*
Corresponding author. Mailing address: Department of
Microbiology, Biology School, University of Barcelona, Ave. Diagonal 645, Barcelona 08028, Catalonia, Spain. Phone: 34 93 402 14 83. Fax: 34 93 411 05 92. E-mail: rosina{at}bio.ub.es.
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