What is Acetate Utilization Test? The acetate utilization test is one of the biochemical tests performed for the identification of aerobic organisms by evaluating their ability to utilize acetate present … Read more
What is Shigella infection? Shigella species are responsible for causing acute gastrointestinal tract infections that damage the ileal and colonic epithelium and cause bacillary dysentery. Shigella infection is mainly reported … Read more
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 … Read more
Biochemical Test of Shigella flexneri Basic Characteristics Properties (Shigella flexneri) Catalase Positive (+ve) Citrate Negative (-ve) Gas Positive (+ve) Gelatin Hydrolysis Negative (-ve) Gram Staining Negative (-ve) Growth in KCN … Read more
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 … Read more
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 … Read more
Enteroinvasive E. coli (EIEC) strains are rare in both developed and developing countries. EIEC infections are characterized by a period of watery diarrhea that precedes the onset of scanty dysenteric … Read more
