Veterinary Microbiology Practice Questions PDF

What causes strangles in horses and what are the clinical signs? **Streptococcus equi**. 1. **S. agalactiae = CAMP test.** 2. The optochin test is used to identify ***S. pneumonia*** [ ] 3. What is the cause of limberneck in waterfowl? ***Clostridium botulinum*** 2. The cause of ci...

What causes strangles in horses and what are the clinical signs? **Streptococcus equi**. 1. **S. agalactiae = CAMP test.** 2. The optochin test is used to identify ***S. pneumonia*** [ ] 3. What is the cause of limberneck in waterfowl? ***Clostridium botulinum*** 2. The cause of circling disease in ruminants is ***[Encephalitis]*** A bacterium that causes diamond skin disease in pigs is ***Erysipelothrix rhusiopathia*** 3. A common bacterial cause of pulmonary abscesses in foals is **Rhodococcus equi** [ ] 4. What is the name of the largest family of enteric bacteria? ***Enterobacteriaceae*** What gram-negative bacterium is a common cause of bladder infection in dogs? ***Escherichia coli*** What bacterium swarms agar plates and how is it able to do this? ***Proteus mirabilis*** What is the cause of bubonic plague and how is it transmitted? ***Yersinia pestis - Spread by bite of infected fleas or infected body fluids*** What bacterium produces pyocyanin and is a common cause of otitis externa in dogs? ***Pseudomonas aeruginosa*** What obligate anaerobe is implicated in **footrot** in cattle? ***Fusobacterium spp*** A common cause of pinkeye in cattle is \_\_\_\_ ***Moraxella bovis*** The cause of Bang's disease or undulant fever is \_\_\_\_\_\_ **Brucella spp** A bacterium implicated in kennel cough is \_\_ ***Bordetella bronchiseptica*** Kennel cough is prevented by ***Vaccine*** Snuffles in rabbits and fowl cholera are caused by \_ ***Pasteurella multocida*** Tularemia is a zoonotic disease caused by ***Francisella tularensis*** Campylobacter spp. may cause abortion in \_\_\_**Sheep**\_ and \_\_\_\_\_\_\_\_\_***Goat***\_\_\_\_\_\_ and diarrhea in carnivores. Campylobacter spp. bacteria may form a characteristic "W" or \_\_\_\_\_\_\_\_\_\_\_***Spiral***\_\_\_\_\_\_\_ shape microscopically. 36\. Leptospirosis is transmitted via \_\_\_\_\_\_\_\_***Urine\_\_\_\_\_\_\_\_\_\_*** from infected animals. It is a\_\_\_\_\_***Spiral\_\_\_\_\_-***shaped bacterium and does not take up \_\_\_\_\_\_\_***Gram***\_\_\_\_\_ stain well. 37\. Borrelia burgdorferi is a \_\_\_\_\_\_***Spiral\_\_\_\_\_\_\_\_-***shaped bacterium that causes \_\_\_\_\_\_\_\_***Lyme Disease\_\_\_\_\_\_\_\_\_*** and is transmitted by \_\_\_\_\_\_\_\_***Ticks***\_\_\_\_\_\_\_\_\_\_. What is a genus of bacteria found in the stomach and may be implicated in ***gastric ulcers*** in animals? ***Helicobacter spp*** The cause of mud fever or rain rot in horses and other animals is ***Dermatophilus congolensis***\_\_\_. This bacterium produces characteristic \_\_\_\_\_\_\_\_\_ ***paint-brush*** \_\_\_\_ lesions. 40\. Tuberculosis in cattle is caused by \_\_\_\_\_\_ ***Mycobacterium bovis\_***\_ , which stains with an \_\_\_\_\_\_\_\_***Acid Fast***\_\_\_ stain. Stained bacteria are \_\_\_\_\_\_\_\_***REd***\_\_\_\_ in colour 41\. The cause of Johne's disease is \_\_\_\_ ***Mycobacterium avium subspecies paratuberculosis*** 42\. Mycobacterium spp. survive \_\_\_\_\_\_***\_phagocytosis*** \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ (being eaten by macrophages). 43\. Mycoplasma spp. have a \_\_\_\_\_\_\_\_\_\_***Fried egg*** \_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_\_\_ appearance in culture and are difficult to stain because they do not have a \_\_\_\_\_\_\_\_\_\_***\_Cell wall***\_ \_\_\_\_\_\_\_\_\_\_\_\_\_\_. 44\. The cause of Q fever is \_\_\_\_\_\_\_\_\_\_\_\_ ***Coxiella burnetii*** \_, which is a common cause of abortion in \_\_\_\_\_\_\_\_\_\_ ***goats, sheep and cattle*** \_\_\_\_\_\_\_\_\_\_\_\_\_\_ and is zoonotic. **What is lichenification?** - Thickening and hardening of the skin due to chronic inflammation or irritation. **Which yeast is commonly found in the external ear canal of dogs and can be part of the normal flora?** - *Malassezia pachydermatis*. **What genus of algae is an uncommon cause of mastitis in cows?** - *Prototheca*. **What fungal organism is associated with rose handler's disease and why?** - *Sporothrix schenckii* causes sporotrichosis, which can be contracted from contaminated plant material like rose thorns. **What fungal agent are people who work with pigeons at risk of contracting when they inhale fungal spores?** - *Cryptococcus neoformans*. **What is aflatoxin?** - A mycotoxin produced by *Aspergillus* species that can contaminate food and feed, leading to toxicity. 10\. **Why do young animals appear to suffer more from ringworm?** - Young animals have an **immature immune system**, making them more susceptible to infection. 11\. **How would you collect a sample for diagnosis of ringworm?** - **Collect hair and skin scrapings** from the **lesion** using a **sterile scalpel** or **forceps** and **place them** on a **fungal culture medium**. 12\. **What genus can sometimes be identified using a Wood's lamp, which causes the fungal hyphae to fluoresce?** - *Microsporum canis* fluoresces under a Wood's lamp. 13\. **The veterinarian has asked you to carry out a trichogram. How would you do this and what are you looking for?** - A trichogram **involves** plucking **hairs** from a **lesion** and **examining them** under a **microscope** for **fungal spores, hyphae, or abnormal hair structure**. 14\. **How does a trichogram differ from the 10% potassium hydroxide digestion procedure?** - A trichogram **examines intact hairs**, while the KOH test **dissolves keratin to make fungal elements more visible.**