Salmonella enterica subsp.enterica serovar Typhimurium detection test kit by using qPCR. Salmonella enterica subsp. enterica sv. Typhimurium (commonly known as Salmonella Typhimurium) is a pathogenic Gram-negative bacterium predominately found in the intestinal lumen. It causes gastroenteritis in humans and other mammals, usually due to ingestion of contaminated food.