Animal-derived foods such as milk, meat, eggs, and fish provide humans with essential nutrition and are widely consumed across the world. These foods are rich in proteins, vitamins, and minerals. However, if proper hygiene is not maintained during production, processing, storage, or transportation, such foods may become contaminated with harmful microorganisms, including viruses.Viruses are microscopic infectious agents that cannot be seen with the naked eye. When contaminated food is consumed, these viruses may enter the human body and cause illnesses such as diarrhoea, vomiting, abdominal pain, fever, and gastroenteritis. Therefore, detection and monitoring of viruses in animal-origin foods are extremely important for ensuring food safety and protecting public health. This article explains the major methods used for viral detection in food samples, including ELISA, Latex Agglutination, RT-PCR, and Agarose Gel Electrophoresis, in simple language.