Salmonella bacterium Coloured transmission electron micrograph TEM of a section through a Salmonella sp bacterium It is seen on a fractal background This Gramnegative bacterium occurs in the intestines of humans and animals Several Salmonella species cause human food poisoning salmonellosis when contaminated food such as meat milk and eggs is eaten Symptoms include abdominal pain nausea vomiting and diarrhoea The infection is treated by rehydration therapy although antibiotics must be taken if the bacteria have spread into the bloodstream Magnification unknown
