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Salmonella is genus that includes 2,300 different species of bacteria. The most common types of salmonella are Salmonella enteritidis and Salmonella typhimurium, which account for half of all human infections. egg is Copyrighted by Flickr user: House Of Sims (brandi sims) under the Creative Commons Attribution license.
Salmonella was discovered in 1884 by American scientist, Dr. Daniel Salmon. Salmonella enterica are rod shaped (baccillus) bacteria. They are commonly found in raw meat, chicken, contaminated water, and even egg shells. Upon entering the host such as an animal, it stays in its intestinal tract. Three variasions of Salmonella enterica are Typhi, Enteritidis, and Typhimurium. They DNA are almost identical.