FN Archimer Export Format PT J TI Detection and Quantification of Noroviruses in Shellfish BT AF LE GUYADER, Soizick PARNAUDEAU, Sylvain SCHAEFFER, Julien BOSCH, Albert LOISY, Fabienne POMMEPUY, Monique ATMAR, Robert L. AS 1:1;2:1;3:1;4:2;5:3;6:1;7:4; FF 1:PDG-DOP-DCN-EMP-MIC;2:PDG-DOP-DCN-EMP-MIC;3:PDG-DOP-DCN-EMP-MIC;4:;5:;6:PDG-DOP-DCN-EMP;7:; C1 IFREMER, Microbiol Lab, F-44311 Nantes 03, France. Univ Barcelona, Dept Microbiol, Enter Virus Lab, Barcelona, Spain. CEERAM SAS, La Chapelle Sur Erdre, France. Baylor Coll Med, Dept Mol Virol & Microbiol, Houston, TX 77030 USA. C2 IFREMER, FRANCE UNIV BARCELONA, SPAIN CEERAM SAS, FRANCE BAYLOR COLL MED, USA SI NANTES BREST SE PDG-DOP-DCN-EMP-MIC PDG-DOP-DCN-EMP IN WOS Ifremer jusqu'en 2018 copubli-france copubli-europe copubli-int-hors-europe IF 3.686 TC 149 UR https://archimer.ifremer.fr/doc/2009/publication-6137.pdf LA English DT Article AB Noroviruses (NoVs) are the most common viral agents of acute gastroenteritis in humans, and high concentrations of NoVs are discharged into the environment. As these viruses are very resistant to inactivation, the sanitary consequences are contamination of food, including molluscan shellfish. There are four major problems with NoV detection in shellfish samples: low levels of virus contamination, the difficulty of efficient virus extraction, the presence of interfering substances that inhibit molecular detection, and NoV genetic variability. The aims of this study were to adapt a kit for use with a method previously shown to be efficient for detection of NoV in shellfish and to use a one step real-time reverse transcription-PCR method with addition of an external viral control. Comparisons of the two methods using bioaccumulated oysters showed that the methods reproducibly detected similar levels of virus in oyster samples. Validation studies using naturally contaminated samples also showed that there was a good correlation between the results of the two methods, and the variability was more attributable to the level of sample contamination. Magnetic silica very efficiently eliminated inhibitors, and use of extraction and amplification controls increased quality assurance. These controls increased the confidence in estimates of NoV concentrations in shellfish samples and strongly supported the conclusion that the results of the method described here reflected the levels of virus contamination in oysters. This approach is important for food safety and is under evaluationfor European regulation. PY 2009 PD FEB SO Applied and environmental microbiology SN 0099-2240 PU American society for microbiology VL 75 IS 3 UT 000262690100009 BP 618 EP 624 DI 10.1128/AEM.01507-08 ID 6137 ER EF