E3 Clicker Questions Flashcards
Properties of mycobacteria include all except:
A. Presence of mycolic acid in the cell wall
B. Positive acid fast staining
C. Presence of lipid compounds in the cell wall
D. Survival in the macrophages
E. Obligate intracellular pathogen
E. Obligate intracellular pathogen
It is supposed to be facultative.
Mycolic acid present in the cell wall of mycobacteria, contribute to the virulence and acid fast staining property.
A. True
B. False
A. True
Which of the following mycobacterium is a common cause of zoonotic tuberculosis?
A. M. tuberculosis
B. M. bovis
C. M paratuberculosis
D. M. lepraemurium
B. M. bovis
Because of the wide broad strain.
Which of the following is incorrect about mycobacterium infections?
A. Induce granulomatous inflammation
B. Multinucleated macrophages are common in lesions
C. Caseous necrosis and mineralization may be present in lesions
D. Humoral immunity helps in protecting from infections
D. Humoral immunity helps in protecting from infections
Supposed to be cellular immune response. The rest are prominent features of mycobacterium infections.
Combination antimicrobial therapy is recommended in the treatment tuberculosis to destroy multiple species of mycobacteria infecting a patient.
A. True
B. False
B. False
Need to use combinations to PREVENT the development of antimicrobial resistance.
Which of the following statement is incorrect about Mycobacterium bovis?
A. It can infect a wide range of host species
B. Transmission can occur through ingestion of unpasteurized milk and meat products
C. Cause lesions indistinguishable from M. tuberculosis infections in humans
D. Vaccination is the most effective way of controlling the disease
D. Vaccination is the most effective way of controlling the disease
Which of the following is least likely to be infected with M. tuberculosis?
A. Human
B. Vervet monkey
C. Elephant
D. Duck
D. Duck
Choose the incorrect statement.
A. Swine dysentery is caused by Brachyspira hyodysentriae
B. The bacteria is mainly causes lesions in the duodenum and ileum
C. This disease affects young animals
D. Asymptomatic carriers are involved in the transmission of the disease.
B. The bacteria is mainly causes lesions in the duodenum and ileum
Choose the incorrect statement.
A. Lyme disease is caused by Borrelia burgdorferri
B. Lyme disease is an arthropod borne disease
C. Antigenic variation in outer surface proteins of this bacteria is a major virulence factor
D. The disease is confirmed if antibodies are detected in the patient.
D. The disease is confirmed if antibodies are detected in the patient.
Members of the Genus Rickettsia colonizes.
A. Salivary epithelium
B. Vascular endothelium
C. Leukocytes
D. Erythrocytes
B. Vascular endothelium
Ruminant anaplasmosis is caused by
A. Anaplasma phagocytophilum
B. Anaplasma marginale
C. Anaplasma platys
D. Anaplasma centrale
B. Anaplasma marginale
Which of the following is incorrect regarding Q fever?
A. Caused by Coxiella burnetti
B. Zoonotic disease
C. May cause abortion in cattle
D. Can be transmitted by arthropods
D. Can be transmitted by arthropods
Should be inhalation.
Mycobacterium are NOT; which of the following
A. Gram +
B. Gram –
C. Acid fast +
D. Slow growing
B. Gram –
Protein exotoxins and extracellular enzymes are the main virulence factors in disease pathogenesis for mycobacterium?]
A. True
B. False
B. False
Exotoxins and extracellular enzymes are not the main cause of pathogenesis. Mycobacterium ulcerans? have a mycolactone macrolide toxin (this was on their exam).
Which of the following is not an obligate pathogen?
A. M. tuberculosis complex
B. M. avium sbsp. Paratuberculosis
C. M. leprea
D. M. avium complex
D. M. avium complex
Which of the following causes mammalian tuberculosis?
A. M. avium sbsp. Avium
B. M. leprae
C. M. bovis
D. M. avium sbsp paratuberculosis
C. M. bovis
What is the main reservoir for M. tuberculosis?
A. Cattle
B. Sheep
C. Humans
D. Badgers
C. Humans
Badgers is M. Bovis
Which of the following is incorrectly matched?
A. M. tuberculosis: caseous granuloma formation
B. M. bovis: Caseous granuloma formation
C. M. avium complex: Non caseous granuloma
D. Tuberculosis: No survival in macrophages
D. Tuberculosis: No survival in macrophages
Mycobacterium survive very well in macrophages
Tuberculosis is considered an acute disease process?
A. True
B. False
B. False
Mycobacterium always think chronic
Which of the following cells is key in fighting a tuberculosis infection?
A. Eosinophils
B. Neutrophils
C. T helper 1 cell
D. T helper 2 cell
C. T helper 1 cell
What type of hypersensitivity reaction will you see with tuberculosis?
A. 1
B. 2
C. 3
D. 4
D. 4
This will be important for diagnosis tb as most use skin test – shave the tail and inject a tb protein and a type 4 tb will show a hypersensitivity with the antigen in the body of an infected animal
What is the main lesion in tuberculosis?
A. Vasculitis
B. Lymphangitis
C. Tubercles
D. Meningitis
C. Tubercles
Its tubercles that are common in the lymph nodes
Which of the following is mismatched?
A. Solid packed Epitheliod macrophages: hard tubercle
B. Caseous necrosis: soft tubercle
C. Soft tubercle: surrounded by Langerhans cells
D. Soft tubercle: surrounded by langhans cells
C. Soft tubercle: surrounded by Langerhans cells
Langerhans are in the isolates in the pancreas; langhans are the multinucleated cells that inside of it is the abscess
M. Tuberculosis can infect all of the following except?
A. Cattle
B. Humans
C. Elephants
D. Dogs
A. Cattle
M. Bovis is in cattle . M. Bovis and M. tuberculosis is indistinguishable in humans as they present the exact same way – must do further testing
Which of the following should be employed with M. tuberculosis for treatment?
A. Penicillin PO QID for 30 days
B. Rifampin PO BID for 6 months
C. Erythromycin PO TID for 6 months
D. Combination therapy ie Isoniazid and Streptomycin
D. Combination therapy ie Isoniazid and Streptomycin
Which of the following in regards to M. bovis is false?
A. New Zealand reservoir: bush tail opossum
B. Ireland and UK reservoir: Badger
C. US reservoir: white tailed deer
D. Worldwide reservoir: humans
D. Worldwide reservoir: humans
You are called to a farm to investigate cattle ( 7 yr old) that have lost condition and have developed a cough what is your top differential (picture of white tubercles on liver) ?
A. Leptospira borgpetersennii serovar hardjo
B. Brachyspira hyodysenteriae
C. Mycobacterium bovis
D. Treponema brennaborense
C. Mycobacterium bovis
What is the most common spread of M. bovis in cattle to cattle spread?
A. Puncture wounds
B. Contaminated water
C. Nursing milk
D. Aerosol
D. Aerosol
If this was badger to cattle it would be puncture wounds
Which of the following causes Johne’s disease?
A. M. avium sbsp paratuberculosis
B. M. avium
C. M. bovis sbsp paratuberculosis
D. M. bovis
A. M. avium sbsp. paratuberculosis
What is the incubation period of Johne’s disease?
A. Days
B. Weeks
C. Months
D. Years
D. Years
Its 2-5 years before you show clinical signs. If we have doubt and have calves we will pull the calves immediately and bottle feed them
You are called to examine cattle (PM) what is top differential? (picture of multinucleated giant cell histologically with abscess in middle and another of cerebroid enteritis intestine)
A. Leptospira borgpetersennii serovar hardjo
B. Brachyspira hydosenteriae
C. Mycobacterium bovis
D. Mycobacterium avium sbsp paratuberculosis
D. Mycobacterium avium sbsp paratuberculosis
False negatives in the Johne’s ELISA during advanced stages of disease occur due to anergy?
A. True
B. False
A. True
Which of the following are you more likely to find in treated municipal water?
A. Leptospira borgpetersennii serovar hardjo
B. Brachyspira hyodysenteriae
C. Mycobacterium avium complex
D. Treponema brennaborense
C. Mycobacterium avium complex
Lepto would be stagnant water for weeks. Mycobacterium is super resistant
Which of the following is mismatched?
A. Mycobacterium ulcerans: buruli ulcer
B. Mycobacterium leprae: leprosy or Hansens disease
C. Mycobacerium leprae: 9 banded armadillo is only known animal reservoir
D. Mycobacterium tuberculosis: tuberculosis in cattle
D. Mycobacterium tuberculosis: tuberculosis in cattle
Which is incorrect:
A. Tuberculoid leprosy few AFB
B. Tuberculoid leprosy: Paucibacillary
C. Lepromatous leprosy: Multibacillary- high cell mediated response, mild disease with numerous AFB
D. Lepromatous leprosy: multibacillary – no cell mediated response, severe disease with numerous AFB
C. Lepromatous leprosy: Multibacillary- high cell mediated response, mild disease with numerous AFB
Which of the following causes feline or murine leprosy? A. M. leprae B. M. ulcerans C. M. lepraemurium D. M. tuberculosis
C. M. lepraemurium