In this paper we report the results of an investigation into the presence of enteric viruses in shellfish from the waters around Sardinia. Twenty two samples of shellfish were examined using a rapid and sensitive technique to concentrate and detect viral RNA in shellfish tissues. After recovery of viral particles, RNA was extracted, transcribed into cDNA and amplified using "nested PCR". Testing with enterovirus-specific RT-PCR produced positive results in over 13% of specimens. The virus detection procedure appears to be effective. In some circumstances it could be a better test of water quality than conventional monitoring techniques.
[Show abstract][Hide abstract] ABSTRACT: This study investigated four methods for the recovery of enteroviruses from sterilized raw wastewater, activated sludge, thickened sludge and treated wastewater, inoculated with Echovirus 11, Gregory prototype. The adsorption-elution method recommended by the US Environmental Protection Agency (EPA) was better for Echovirus 11 recovery than a sonication method, a modified EPA method and a membrane adsorption elution method since it resulted in the highest detection levels by cell culture and RT-PCR (Friedman's test, p<0.00041 and p=0.041, respectively).
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