NDLI: Genotyping of Rotaviruses in Environmental Water and Stool Samples in Southern Switzerland by Nucleotide Sequence Analysis of 189 Base Pairs at the 5′ End of the VP7 Gene

Content Provider	PubMed Central
Author	Franca, Baggi Peduzzi, Raffaele
Copyright Year	2000
Abstract	Stool specimens from children (<4 years old) with diarrhea were collected over a 1-year period in Ticino (southern region of Switzerland). During the same period, environmental samples were collected from surface waters in the proximity of major water treatment plants. From treatment plants, samples were collected from the raw sewage and before the release of the treated water. From rivers, samples were collected before and after receiving the treated waters. A single-step reverse transcription (RT)-PCR amplification of the entire VP7 gene from extracted double-stranded RNA was developed. For the water samples, a further nested PCR was necessary to increase sensitivity. All amplified viral products were sequenced, and the sequence profile was compared to that of the VP7 genes of human and animal rotaviruses from GenBank. Rotavirus strains are characterized by outer capsid proteins G (glycoprotein) and P (protease-cleaved protein). Correct G genotyping of viral sequences from stool and water samples was possible by analyzing only 189 bp at the 5′ end of the VP7 gene. In the Ticino region, the most predominant G genotype among clinical and water samples was G1. Genotypes G2 and G4 were found only among clinical samples. We also detected rotavirus G1-type sequences in feces from a healthy adult. This finding corroborates the hypothesis that healthy adults act as potential reservoirs for the spread of rotavirus in the environment. In our experiments, this RT-PCR-based method for rotavirus genotyping has proven to be a useful tool for epidemiological investigations.
Starting Page	3681
File Format	PDF
ISSN	1098660X
e-ISSN	1098660X
Journal	Journal of Clinical Microbiology
Issue Number	10
Volume Number	38
Language	English
Publisher	American Society for Microbiology
Publisher Date	2000-10-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology (medical)

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