hepatitis E virus(9) HEV(6) food(4) detection(4) food safety(4) Foodborne disease(4) milk(3) Cell culture(3) zoonosis.(3) hepatitis E(2) Coxiella burnetii(2) Hepatitis virus (A, E)(2) animal reservoir(2) Detection in food(2) viremia.(2) filtration(2) zoonotic transmission.(2) Assiut(2) Risk assessment(2) molecular methods(2) liver(2) Quantitative RT-PCR.(2) Zoonotic.(2) Foodborne viruses.(2) human norovirus(2) Foodborne outbreak(2) drinking water(2) Raw milk(1) Liverwurst(1) epidemiological survey(1)