How do you identify Pasteurella multocida?
The Minitek identification of Pasteurella depends on 100% positive xylose reactions, whereas only 56% of the P. haemolytica strains were positive for xylose fermentation. The Oxy/Ferm system, instead of giving a definitive identification, in most instances merely placed Pasteurella in a category of similar organisms.
What shape is Pasteurella multocida?
Pasteurella spp. are very small, nonmotile, nonspore-forming Gram-negative bacteria that are coccoid, oval or rod-shaped. They often exhibit bipolar staining. They are aerobic and facultatively anaerobic.
Is Pasteurella multocida Gram positive or negative?
Pasteurella multocida is a small, gram-negative, nonmotile, non–spore-forming coccobacillus with bipolar staining features. The bacteria typically appear as single bacilli on Gram stain; however, pairs and short chains can also be seen.
Is Klebsiella Gram positive or negative?
Klebsiella pneumoniae is a gram-negative, lactose-fermenting, non-motile, aerobic rod-shaped bacterium. It has been a known human pathogen since it was first isolated in the late nineteenth century by Edwin Klebs. The microbiology, pathogenesis, and epidemiology of infections due to K.
What does Pasteurella multocida cause?
Respiratory disease caused by Pasteurella multocida follows a relatively nonspecific course, with cough fever, shortness of breath, and chest pain being common complaints. Pneumonia is the most common type of infection, although tracheobronchitis, empyema, and lung abscesses may also occur.
What is the drug of choice for Pasteurella multocida?
Most Pasteurella isolates are susceptible to oral antimicrobials such as amoxicillin, amoxicillin/clavulanic acid, minocycline, fluoroquinolones (ciprofloxacin, ofloxacin, levofloxacin, moxifloxacin), and trimethoprim-sulfamethoxazole.
How does Pasteurella multocida spread?
Pasteurella infections are spread by inhalation of aerosol droplets, by direct nose to nose contact, or by ingestion of food and water contaminated by nasal and oral discharges from infected animals. Humans can also acquire the organism through dog or cat bites.
What are the morphology and culture characteristics of Klebsiella pneumoniae?
That’s all about the Morphology and Culture Characteristics of Klebsiella pneumoniae…. Shape – Klebsiella pneumoniae is a short, plump, straight rod shape (bacillus) bacterium. Size – The size of Klebsiella pneumoniae is about 1–2 µm × 0.5–0.8 µm (micrometer).
What are the characteristics of Pasteurella species?
Pasteurella spp. are very small, nonmotile, nonspore-forming Gram-negative bacteria that are coccoid, oval or rod-shaped. They often exhibit bipolar staining. They are aerobic and facultatively anaerobic. Most species are catalase-positive and oxidase-positive. They attack carbohydrates readily, forming acid but no gas.
How is Pasteurella multocida a strain 001 obtained?
Pasteurella multocidaA strain 001 was obtained from turbinates, trachea, and lungs of rabbits with signs of rhinitis and pneumonia from farms in the Sabana de Bogotá (Colombia). The organism was grown in brain heart infusion (BHI) agar; gray nonhemolytic colonies with a round morphology were selected.
Is Klebsiella pneumoniae flagellated?
Flagella – K. pneumoniae is a non-flagellated bacterium. Spores – The Klebsiella pneumoniae is a non–sporing bacterium. Capsule – Capsules are present in Klebsiella pneumoniae which can easily be demonstrated using India ink preparation, appear as a clear halo in a dark background.