Evaluation of a norovirus detection methodology for ready-to-eat foods

► Influence inoculum level: Detection 106 genomic NoV copies/10g food product: reliable; Detection 104 genomic NoV copies/10g food product: difficult. ► Influence RNA purification: Nuclisens Easymag better in soups/composite meals. ► Influence food type: Soups > Composite meals > Deli Sandwiches; TriConc better in soups. ► Use of MNV-1 as process control: Sufficient high concentrations (106 genomic NoV copies/10g food product).