Shigella is not a product of invention but rather a genus of bacteria that was discovered. It was first identified in the early 20th century by Japanese bacteriologist Kiyoshi Shiga, after whom the bacterium Shigella dysenteriae was named. Shigella species are known to cause bacillary dysentery or shigellosis in humans.
shigella sp or shigella spp = shigella species
Eubacteria is the Kingdom of shigella.
Shigella attacks all people especially weak children or infants.
The color of shigella in the DCA medium is straw or pink.
Dysentery is the disease name. The pathogen name is Shigella Dysenteriae.
Shigella infection spreads through food or water contaminated by human waste.
Four different groups of Shigella can affect humans.
Shigella are identified by a combination of their appearance under the microscope and various chemical tests.
Shigella species are generally indole negative, except for Shigella flexneri, which can be indole positive depending on the specific strain. In laboratory identification, indole testing is used to differentiate between various enteric bacteria. Therefore, while most Shigella species do not produce indole, Shigella flexneri may show positive results under certain conditions.
Based on my own test, Shigella flexneri tests negative for the citrate test.
Salmonella, Shigella Organisms that ferment lactose display "nucleated colonies" - colonies with dark centers.
Salmonella, Shigella, Yersinia, and Serratia are all gram-negative facultatively anaerobic rods.