Biological hazards are the hazards that have organic origin or conveyed by biological vectors such as food borne pathogens those causes’ foodborne diseases that can be a serious threat to health and life. Biological invasions can have long lag phase from introduction to establishment and to successful invasion. These pathogens can enter at any stage of food processing. Some foods such as poultry, raw milk, meat, seafood are traditionally been implicated with disease outbreaks. The emergency of food born outbreak may be a result of social, economic and biological factor. Susceptibility to risk depends on immune system of individuals. Same food can be a source of many different pathogenic microbes, where each microbe can cause different diseases or illness. Symptoms many start from common headache to fatal. Increasing globalization is contributing to the spread of food born disease and expanding urbanization leading to increasing crowd formation thus facilitating transmission of diseases.