Bovine Tuberculosis Flashcards
Giant cells typically occur in tubercles
T
Mycobacterium tuberculosis can cause generalised tuberculosis in pigs
T
Mycobacterium tuberculosis can cause tuberculosis in humans
T
Facultative pathogenic mycobacteria can colonise only cold-blooded animals
F
Mycobacteria are facultative intracellular bacteria
T—obligate/faculative/saprophyte pathogenic—facultative intracellular
Saprophytic and facultative pathogenic mycobacteria cannot colonise warm blooded animals
F
Facultative pathogenic Mycobacteria can only reproduce in the environment
F
Facultative pathogenic Mycobacteria can only colonize in warm-blooded animals
F
There is no antigen connection between facultative and obligate pathogenic mycobacteria
F
Lympho-haematogenous spread of mycobacteria can be seen in the post primary phase of tuberculosis
F—-early generalisation
Lympho-haematogenous spread of mycobacteria can be seen in the post primary phase of tuberculosis.
1) F
There is a close antigen relationship between mycobacteria
T
Mycobacterium bovis can cause tuberculosis only in ruminants
F
Mycobacterium bovis can cause generalized tuberculosis in goats
T
Tuberculin is an extract made from broth culture of mycobacteria
T
PPD (purified protein derivate)
• tuberculoproteins
• M. bovis: 20.000 IU
• M. avium subsp. avium: 25.000 IU
The tuberculin contains antigens from mycobacteria
T
Tuberculin is the toxin produced by mycobacteria
F
Intra canalicular spread of mycobacteria can be seen in the post primary phase of tuberculosis
T
Antibodies against mycobacteria are detected in the tuberculin test
F
Facultative pathogenic mycobacteria can cause local lesions in pig
T
Facultative pathogenic mycobacteria cannot cause tuberculosis
F
Mycobacteria are acid and alcohol fast bacteria
T
Mycobacterium tuberculosis can cause generalized tuberculosis in parrots
T
Fresh tuberculosis lesions in the lymph nodes are common the early generation
T
Mycobacteria can be stained with Ziehl-Neelsen staining
T
Mycobacteria cannot be stained
F
Obligate pathogenic mycobacteria can occur and replicate in the environment
F
All mycobacteria species are obligate pathogenic
F
The resistance of mycobacteria is low, they die in the environment soon
F
Mycobacterium bovis can cause generalised tuberculosis in goats
T
Fresh tuberculosis lesions in the lymph nodes are common in the post primary phase
F—in early generalisation phase
Mycobacteria are highly resistant thanks to lipids and waxes in the cell wall
T
Pigs are resistant against Mycobacterium tuberculosis
F
Mycobacterium bovis can cause generalized tuberculosis in badgers
T
Mycobacterium caprae can infect only goats
F
Tuberculosis lesions in the lymph node are common in the early generalization
T
The habitat of the obligate pathogenic Mycobacteria is the environment
F
Mycobacteria are obligate intracellular bacteria
F faciultative
Waxes can be found in the cell wall of Mycobacteria
T
Only Mycobacterium tuberculosis can cause tuberculosis in humans
F
Neutrophil granulocytes can be typically found in tubercles
F—giant cells lymphocytes macrophages histiocytes
Necrosis can be seen in the tubercles
T
The habitat of saprophytic, facultative pathogenic Mycobacteria is the environment
T
Saprophytic, facultative pathogenic Mycobacteria cannot colonize mammals
F
The cell wall of mycobacteria contains mycolic acid
T
The tuberculin contains lipopolysaccharide (LPS) antigens
F
The cell wall of mycobacteria contains large amount of lipopolysaccharide
T
Mycobacteria can replicate only in animals
F
Mycobacterium tuberculosis causes tuberculosis in parrots
T
Mycobacterium tuberculosis causes generalized tuberculosis in badgers
T
Mycobacterium tuberculosis causes tuberculosis in poultry
F–mycobacterium avium
All mycobacteria can replicate in the environment
F–not all some are obligate pathogenic
Mycobacterium bovis can cause tuberculosis in wild living ruminants
T
Mycobacterium bovis can cause tuberculosis in wild boars
T
If the increase of the thickness of the skin fold in the tuberculin test is 1.9 mm the reaction is positive
F– more than 4mm=positive
less than 2mm is negative
2-4mm inconclusive
The skin intradermal tuberculin test is a Type IV. hypersensitivity reaction
T
Mycobacteria can survive in the environment only for a few days
F
Atypical mycobacteria can cause lesions in pigs
T
Mycobacteria caprae can infect cattle, other ruminants and swine
T
Saprophytic, facultative pathogenic mycobacteria cannot cause tuberculosis
F
Only cattle maintain bovine tuberculosis
F
Obligate pathogenic Mycobacteria can only reproduce in the infected body
T
Facultative pathogenic mycobacteria can cause tuberculosis in fishes
T
Mycobacteria are not resistant, they can survive in the environment for maximum of two days
F
Mycobacterium suis is the most frequent agent of tuberculosis of pigs
F
Facultative pathogenic mycobacteria can colonize the gut of pigs
T
Sometimes facultative pathogenic mycobacteria cause lesions in pig
T
Mycobacteria can survive in the environment
T
Mycobacteria cannot be cultured
F
Waxes and lipids in the mycobacteria are virulence factors
T
The agent of avian tuberculosis is an obligate pathogenic bacterium
T
Tuberculin test is an allergic test
T
Mycobacteria can be cultured, but their incubation time is long
T
Tuberculosis is diagnosed by detecting antibodies to M. bovis in the blood with ELISA
F–tuberculin test
The center of the tubercle is necrotized
T
The tubercle consists of histiocytes and foreign body giant cell.
T
The causative agents of tuberculosis are obligate pathogenic bacteria
T
Köster staining is a special staining for Mycobacteria
F—brucella
Mycobacteria are highly resistant
T
Early generalization of mycobacteria occurs via lympho-hematogenous route
T
In dogs’ tuberculosis can be generalized
T
Late generalization can be characterized by lost resistance
T
In the tubercle, coagulation necrosis is seen
T
In the phase of early generalization Mycobacteria do not replicate in the lymph node
F
