study of salmonella serotypes contaminated in shrimp, lobster and fishes at seafood markets in isfahan

salmonella is one of the most important bacterial pathogens, especially in children and the elderly can lead to acute gastroenteritis. the natural location of this bacterium is in the digestive system, so transferring by fecal to water. a total of 180 samples of fish, shrimp and lobster was catch randomly from retail stores at isfahan city and in aseptic conditions was transported to the food laboratory. after microbial culture and serotyping with anti-sera monovalan was performed. a total of 180 samples including, 110 fishes and 40 shrimps was tested, respectably 9 (18/8%) and 2 (5%) samples were contaminated with salmonella, but the contamination was not found in samples of lobster. the most common serotypes are salmonella typhimurium and s. enteritidis isolated from samples contaminated with bacteria. the most bacterial contamination occurred in summer (17.5%) followed by fall (3.8%), and winter (1.6%). to our knowledge, the present study is the first report of the isolation salmonella serotypes of from fish, shrimp and lobster in iran.