MT4 - Bovine tuberculosis (R) Flashcards
Mainly proliferative lesions can be seen in the late generalization phase of bovine tuberculosis
F
Mainly exudative
Bovine tuberculosis is sustained by infected animals
T
Fresh tuberculosis lesions in the lymph nodes are common in the early generalization
T
Infected cattle shed the agents of bovine tuberculosis in milk
T
Infected cattle shed the agents of bovine tuberculosis in tracheal discharge
T
Infection of cattle with Mycobacterium tuberculosis is frequently asymptomatic
T
The sensitivity of the intradermal tuberculin test is above 90% in cattle
T
If the tuberculin test is negative, it has to be repeated immediately
F
Only repeated after 60-90 days, some countries 42 days
The tuberculin test in cattle can be false negative if the animal is infected with facultative pathogenic mycobacteria
F
false positiv
The tuberculin test in cattle can be false negative if the animal is infected with Mycobacterium tuberculosis
F
false positive
The tuberculin test in cattle can be false negative if the animal is in the exhaust phase
T
The tuberculin has to be injected in the skin fold in the skin intra dermal test
T
The tuberculin test is used for the detection of infection of animals with mycobacteria.
T
The intradermal tuberculin test is negative if the increase of the thickness of the skin is 1.8 mm and there are no local lesions or signs
T
The intradermal tuberculin test is positive if the increase of the thickness of the skin is 3.6 mm and there are local lesions or signs
T
The intradermal tuberculin test is negative if the increase of the thickness of the skin is 3.6 mm and there is no local lesions or signs
F
Inconclusive
If the resistance of the animal is high, mainly exudative lesions of tuberculosis can be seen
F
In the case of bovine tuberculosis aerogenic infection is the most frequent way of infection
T
In the case of bovine tuberculosis always exudative lesions can be seen
F
Selection (test & slaughter) and generation shift methods can be used for eradication of bovine tuberculosis
T
Europe is free from bovine tuberculosis; bovine tuberculosis does not occur in Europe at all
F
Rifampicin is frequently used for the treatment of bovine tuberculosis
F
not allowed in farm animals
The thermal tuberculin test can be used in order to examine the organic reaction of bovine tuberculosis
T
The tuberculin test in cattle can be false negative if only short time (1-3 weeks) has passed since the infection
T
- early infection stages
- immunocompromise
- improper test administration,
Positive reaction of the tuberculin test in cattle can be caused by infection with Mycobacterium tuberculosis
T
False positive reactions of the tuberculin test in cattle can be caused by infection with certain Corynebacterium species
T
Mycobacterium bovis is an agent of bovine tuberculosis
T
If the cellular immune reaction of cattle is weak, mainly exudative lesions of tuberculosis can be seen
T
Bovine tuberculosis cause mainly exudative lesions in calves below 1 month
F
Mycobacterium tuberculosis can cause tuberculosis in humans
T
In case of infection with mycobacterium bovis the reaction against bovine and avian tuberculin is about the same in cattle
F
Cough is a typical clinical sign of bovine pulmonary tuberculosis
T
Mycobacterium bovis and mycobacterium caprae belong to the mycobacterium tuberculosis complex
T
The incubation time of bovine tuberculosis is 1-2 weeks
F
Months, even years
Mycobacterium bovis can cause generalized tuberculosis in pigs
T
The skin intradermal tuberculin test has to be read 24 hours after injection
F
Reading after 72 hours
Dermatitis nodosa is caused by mycobacterium bovis
F
M.avium
Only aerosol infection occurs in the case of bovine tuberculosis
F
The skin intradermal tuberculin test can be repeated within a week if necessary
F
Mycobacterium bovis can cause tuberculosis in humans
T
The primary complex of bovine tuberculosis is generally seen in the gastrointestinal tract
F
False positive reactions of the tuberculin test in cattle can be caused by pre-allergy
F
Caused by parallergy Pre-allergy causes false negative
In the intradermal skin test for tuberculosis, other mycobacteria can cause false positive.
T
The skin intra-dermal tuberculin test is a type IV hyper-sensitivity test
T
Mycobacterium bovis and Mycobacterium caprae can cause bovine tuberculosis
T
The tuberculin skin test is positive if the skin thickness is 2mm and local signs such as severe oedema of the neck is present
T