shigella

SHIGELLA DYSENTERIAE

Shigella dysenteriae is a Gram-negative, non-motile bacterium causing bacillary dysentery. It’s transmitted primarily through the fecal-oral route, requiring a low dose to initiate infection. Symptoms include bloody diarrhea and abdominal cramps. Diagnosis involves stool cultures, and treatment may include antibiotics for severe cases. Prevention focuses on hygiene and clean water.

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Bacteriology, , ,

Desoxycholate Citrate Agar (DCA)

Desoxycholate Citrate Agar (DCA) is a selective medium for the isolation of Salmonella and Shigella organisms. It is ideal for the investigation of pathogenic Enterobacteria. The Gram-positive organisms are totally inhibited by the sodium citrate and sodium desoxycholate in the medium. Proteus and coliforms are also highly inhibited. Salmonella typhi, S. paratyphi and Shigella species

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