5 Questions
Which bacterial species is responsible for Malignant Edema?
Clostridium septicum
Which type of hypersensitivity reaction is characterized by degranulation of mast cells and basophils?
Type I hypersensitivity
What is the characteristic feature of Haemophilus somnus infections?
Tropism for brain (cerebellum and brain stem)
Which parasitic disease has a two-host cycle, involving a predator and prey?
Sarcocystosis
What is the shape of the virus that causes Bovine Ephemeral Fever?
Bullet-shaped
Study Notes
Malignant Edema
- Acute and generally fatal toxemia caused by beta toxin, an endotoxin derived from Gram-negative bacterial cell walls
- Affects hosts such as cattle, horses, sheep, goats, pigs, and humans
- Caused by Clostridium septicum, also known as Hemorrhagic Enteritis
Anaphylaxis
- Immediate (Type I) hypersensitivity reaction to antigens to which the body was previously sensitized
- Characterized by degranulation of mast cells and basophils
Haemophilus Complex
- Caused by Haemophilus somnus and Histophilus somni, a Gram-negative pleomorphic rod or coccobacillus
- Results in septicemic disease and thromboembolic meningoencephalitis (TEME)
- Shows tropism for the brain, particularly the cerebellum and brain stem
Sarcocystosis
- Also known as Sarcosporidiosis
- Caused by Sarcocystis, a coccidial protozoan with a 2-host cycle (predator-prey)
- Examples include S. cruzi (dog-cattle) and S. hirsuta (cat-cattle)
Coccidiosis
- Caused by Eimeria bovis, which infects the cecum and colon
- Caused by Eimeria zuernii, which infects the small and large intestine
Bovine Ephemeral Fever
- Caused by a bullet-shaped virus transmitted by arthropods
- Also known as Three-day Sickness
This quiz covers various topics in veterinary microbiology, including Malignant Edema, Anaphylaxis, and Haemophilus Complex. Test your knowledge of these important veterinary concepts!
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