Microbiology of food & animal feed. Horizontal method for determination of hepatitis A virus & norovirus in food using real-time RT-PCR. Method for quantification Food products, Animal feed, Microbiology, Microbiological analysis, Food testing, Pathogens, Microorganisms, Biochemical methods of analysis, Nucleic acids, Deoxyribonucleic acid, Ribonucleic acid, Enzymes