food poisoning has been defined as an acute gastroenteritis caused by ingestion of or drink contaminated with either living bacteria or their toxins or inorganic chemical substances and poisons derived from plants and animals. Food poisoning outbreaks among humans caused by Salmonella spp are due to salmonella typhimurium, Salmonella choleraesuis, Salmonella enteritidis and many other similar species. Incubation period ranges from 6 to 48 h and presenting symptoms include fever, headache, nausea,vomiting,abdominal pain and diarrhoea. Reservoir/source of infection include poultry,rats,pigs,cattle,pets and human patients and convalescent carriers. Main route of transmission is by ingestion of the organisms in food derived from infected food an imals. Food can also be contaminated by infected food handlers, by cross contamination as a result of poor hygiene and from faeces of an infected animal or a person