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Shigella sonnei- Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes
Introduction Shigella sonnei is a bacterium causing shigellosis, a type of dysentery. It primarily infects the human intestines. This pathogen spreads through contaminated food or water. Symptoms include diarrhea, fever, and stomach cramps. It thrives in crowded, unsanitary conditions. It resists stomach acid, enabling it to infect easily. The bacteria invade intestinal cells, causing inflammation and damage. Antibiotics can treat shigellosis, but resistance is rising. Preventing infection requires good hygiene and safe food practices. Vaccines are...
Staphylococcus hominis- Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes
Introduction Staphylococcus hominis is a part of the human skin flora. It resides harmlessly on the skin's surface. Often, it contributes to the skin's natural defenses against pathogens. This bacterium thrives in moist areas like armpits. It can cause infections in people with weakened immune systems. In hospitals, S. hominis might infect indwelling devices. It is becoming resistant to common antibiotics. Researchers study its genes to understand this resistance. Despite its potential for infection, it plays...
Raoultella ornithinolytica-Introduction, Morphology, Pathogenicity, Lab Diagnosis, Treatment, Prevention, and Keynotes
Introduction Raoultella ornithinolytica, a Gram-negative, encapsulated, non-motile, rod-shaped bacterium, belongs to the Enterobacteriaceae family. Initially, researchers classified it under the genus Klebsiella, but later reclassified it due to its significant genetic and biochemical differences. Various environments, including water, soil, and the gastrointestinal tracts of humans and other mammals, harbor this organism. Its unique ability to degrade ornithine through the enzyme ornithine decarboxylase sets it apart from closely related species. As an opportunistic pathogen, Raoultella ornithinolytica can...