Shigella dysenteriae- Pathogenicity and Clinical Manifestation

Shigella dysenteriae- Pathogenicity and Clinical Manifestation

Shigella dysenteriae- Pathogenicity and Clinical Manifestation Shigella dysenteriae is a species of gram-negative, facultatively anaerobic, rod-shaped bacteria that is extremely pathogenic and causes severe dysentery. Infection with this organism often leads to ulceration of the intestinal epithelium. It is known to produce an exotoxin (Shiga toxin) which disrupts protein synthesis and produces endothelial damage. Figure: … Read moreShigella dysenteriae- Pathogenicity and Clinical Manifestation

Laboratory Diagnosis, Treatment and Prevention of Shigella dysenteriae

Laboratory Diagnosis, Treatment and Prevention of Shigella dysenteriae

Laboratory Diagnosis of Shigella dysenteriae Specimens: stool, mucus flecks, and rectal swabs for culture. Large numbers of fecal leukocytes and some red blood cells often are seen microscopically. Microscopic examination Microscopic examination of stool smears reveals higher number of PMN cells. They are Gram negative small rod shaped, non-motile, non-capsulated. Culture and biochemical analysis The … Read moreLaboratory Diagnosis, Treatment and Prevention of Shigella dysenteriae

Habitat and Morphology of Shigella dysenteriae

Habitat and Morphology of Shigella dysenteriae

Habitat and Morphology of Shigella dysenteriae Habitat of Shigella dysenteriae They are found worldwide. Humans are only the natural host. They are also found in human intestinal tract. They are mostly found in the area where there is overcrowded. Prevalent in low waste management areas and no safe drinking water supply. Houseflies serves as vectors. … Read moreHabitat and Morphology of Shigella dysenteriae