Food borne illnesses cause untold misery for many people in Australia every year. It produces symptoms such as nausea, vomiting, stomach pain, diarrhoea, or fever. Yet the symptoms are often the same as for gastro-type illnesses caused by other sources (other people carrying the bacteria, unhygienic surfaces, etc). So how do we tell when an illness is caused by food rather than from other sources? In this program we examine what food poisoning is, how it is caused and the methods used to prevent it.