Salmonella vs. Shigella

Difference Between Salmonella And Shigella Salmonella Salmonella, a genus of bacteria that frequently cause infections in humans and…

Difference Between Salmonella And Shigella

Salmonella

Salmonella, a genus of bacteria that frequently cause infections in humans and other animals. There are over 300 types of Salmonella classified in the family Enterobacteriaceae. These are aerobic, or oxygen-dependent rod-shaped, gram-negative bacteria. They are generally motile and usually do not produce spores.

Salmonella infections, commonly called salmonellosis, most often affect the gastrointestinal tract but may be generalized. The infection may range in severity from very mild, almost imperceptible, to very serious, sometimes even fatal, as in such a disease as typhoid. Salmonella are transmitted through the feces and urine of infected persons or occasionally animals, with feces-contaminated hands a common vector.

Shigella

Shigella, a genus of nonmotile, gram-negative, rod-shaped bacteria that can cause intestinal disturbances in man and other animals. Infection with a strain of Shigella produces an acute infection known as bacillary dysentery or shigellosis. Some infections may be asymptomatic but the majority produce various intestinal symptoms ranging from mild diarrhea to severe and sometimes fatal dysentery. Infection with C. dysenteriae is particularly severe. It can be treated with a variety of antibiotics, though shigellae often become resistant to these drugs. If dysentery is severe, replacement of lost fluid and electrolytes may be necessary.

 

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