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Shigella flexneri is a Gram-negative bacterium characterized by its rod-shaped morphology. It typically measures about 0.5 to 0.7 micrometers in diameter and 1 to 3 micrometers in length. These bacteria are non-spore-forming and exhibit a single polar flagellum, although many strains are non-motile. Shigella flexneri is known for its ability to cause dysentery in humans.
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What does spp after the shigella stand for?
shigella sp or shigella spp = shigella species
What is the colony morphology for shigella?
Shigella typically forms small, colorless or pale colonies on non-selective media like nutrient agar, as it is non-lactose fermenting and does not produce acid. On selective media such as MacConkey agar, Shigella appears as colorless colonies, while on XLD (Xylose Lysine Deoxycholate) agar, it may produce red colonies due to the inability to ferment xylose. The colonies are generally smooth, shiny, and convex in shape.
What type of pathogen causes shigella?
Shigella is caused by a type of bacterium. Specifically, it is a genus of bacteria belonging to the family Enterobacteriaceae. Shigella is known to cause shigellosis, an infectious disease characterized by diarrhea, fever, and abdominal cramps. There are four main species of Shigella, with Shigella dysenteriae, Shigella flexneri, Shigella boydii, and Shigella sonnei being the most common.
What kingdom is shigella in?
Eubacteria is the Kingdom of shigella.
What is shigella spp?
Shigella spp. are a group of bacteria that cause shigellosis, an infectious disease characterized by diarrhea, abdominal pain, and fever. These bacteria are highly contagious and are primarily transmitted through contaminated food and water, as well as person-to-person contact. Shigella infections can lead to severe gastrointestinal symptoms and may require medical treatment, especially in vulnerable populations. The four main species of Shigella are Shigella dysenteriae, Shigella flexneri, Shigella boydii, and Shigella sonnei.
Colour of shigella in DCA medium?
The color of shigella in the DCA medium is straw or pink.
Who does shigella attack?
Shigella attacks all people especially weak children or infants.
WHAT IS BACILLARY DYSENTERY CAUSED BY?
Bacillary dysentery, also known as shigellosis, is caused by infection with Shigella bacteria. There are four main species of Shigella that can lead to this illness: Shigella dysenteriae, Shigella flexneri, Shigella boydii, and Shigella sonnei. The bacteria are primarily transmitted through contaminated food and water, as well as direct person-to-person contact. Symptoms typically include diarrhea, fever, and abdominal cramps.
What is the disease name for shigella dysenteriae?
Dysentery is the disease name. The pathogen name is Shigella Dysenteriae.
Is shigella dysentery acid fast positive?
No, Shigella dysentery is not acid-fast positive. Shigella is a genus of bacteria that are Gram-negative and do not retain the stain used in acid-fast bacilli (AFB) staining. Acid-fast positivity is characteristic of mycobacteria, such as Mycobacterium tuberculosis, not Shigella. Therefore, Shigella dysentery would not be identified as acid-fast in laboratory tests.
How are Shigella bacteria identified?
Shigella are identified by a combination of their appearance under the microscope and various chemical tests.
How is the Shigella infection spread?
Shigella infection spreads through food or water contaminated by human waste.
