Mareks Disease Flashcards
In case of viraemia the GaHV2 spreads to fowl’s organs in macrophages.
T
Transient paralysis form of Marek’s disease can be present in 6-week-old chicken.
T
Infection of Marek’s disease can occur in hatchery
T
The vaccines of Marek’s disease are not efficient.
F
The turkey herpesvirus causes cross immunity against Marek’s disease.
T
Turkey Herpes virus can be used for vaccination against Marek Disease
T
Lymphoproliferative form of Marek’s disease can be present in 6-week-old chicken.
T
Lymphoproliferative form of Marek’s disease can be present in hens (older age).
F
Clinical signs of Marek’s disease present rare, because of vaccination
T
Lymphoproliferative form of Mareks disease is a chronic disease
F
The duck herpesvirus causes cross immunity against Marek disease
F
The free virions spread to organs independent of cells in the case of Marek disease
F
Transient paralysis form of Mareks disease can be present in hens
F
Lymphoproliferative form of Mareks disease is an acute disease
T
Neurological form of Mareks disease can be present in 4 week old chicken.
F
There is in ovo vaccine against Mareks disease
T
Intake of GaHV2 happens most frequently per os.
F
Germinative infection does not occur in Mareks disease
T
Germinative infection does occur in Mareks disease
F
In case of viraemia the GaHV2 spreads to fowl’s organs in red blood cells
F
The acute form of Mareks is primarily a tumour formation
T
Marek disease is usually seen in chickens below 2 weeks of age.
F
Marek disease virus is shed with faeces in high titres
F
Signs of Marek disease may be very similar to reticuloendotheliosis signs
T
The Marek disease virus survives for long in the environment
T
Marek disease is caused by turkey herpesvirus
F
Transient Marek paralysis may lead to visceral form
T
Transient paralysis by Marek’s disease usually ends in full recovery
F
The chronic form of Marek disease is characterized by neurological disorders
T
The chronic form of Marek disease is due to circuses of higher virulence
F
Transient Marek paralysis may lead to visceral form
T
Marek disease is the result of air born infection
T
Transient paralysis by Marek disease usually ends in full recovery.
F
Marek disease usually starts as an airborne infection.
T
Free Marek virus particles are shed from the feather follicles.
T
The Marek’s disease virus may survive in the environment for several months
T
Marek’s disease is most frequently seen in geese and ducks.
F
Free virions of the Marek’s disease virus are formed in the feather follicle epithelial cells.
T
Humoral immunity plays the central role in the host’s defence against the Marek’s disease
virus
F
The neurological form of the Marek’s disease is seen only in day-old chicks.
F
Chicken shed the Marek’s disease virus via feather follicular epithelial cells.
T
The pathological lesions of acute Marek’s disease and reticuloendotheliosis can be similar.
T
Conjunctivitis is a frequent sign of acute Marek’s disease.
F
The Marek ́s disease virus is transmitted by inhalation.
T
Marek ́s disease virus can ́t be prevented by vaccination, because it ́s immunosuppressive.
F
The pathology lesions of acute Marek ́s disease and avian leucosis can be similar.
T
The Marek ́s disease virus causes immunosuppression
T
The acute form of Marek ́s disease is characterized by lymphoid cell proliferation
T
The neurological form of Marek ́s disease has a mass appearance.
F
The highly virulent strains of Marek ́s disease may cause tumours in turkey.
T
The incubation time of acute Marek ́s disease is 1-2 days
F
The neurological form of Marek ́s disease leads to significant liver degeneration.
F
Both serotypes of the Marek ́s virus cause disease in geese.
F
North America is free of Marek ́s disease.
F
Marek’s disease only occurs in domestic fowl.
T
Marek’s disease spreads primarily via the aerogenous route.
T
Marek’s disease virus is shed mainly via the faeces.
F
Marek ́s disease in the blood multiplies in the endothelial cells
F
Marek ́s disease is a beta herpes virus.
F
Marek’s disease primarily targets day old chickens.
F
The neoplastic form of Marek disease is caused by high virulence strains
T
Vaccination is used for the prevention of Marek ́s disease.
T
The neoplastic form of Marek’s is caused by low virulence strains
F
We can differentiate Marek’s disease from reticuloendotheliosis only by lab diagnostics
methods.
T
Prevention against Marek ́s: no measures needed as the disease remains mostly
symptomless.
F
General preventative measures and vaccination of day-old chickens must be used for the
prevention of Marek’s disease.
T
Live attenuated strains are used for vaccination against Marek ́s disease
T
No vaccination is needed against Marek’s disease.
F
The highly virulent strains of Marek’s disease may cause tumors in turkeys.
T
Marek’s disease viruses are uniform in their virulence.
F
Highly virulent Marek’s disease viruses may break through vaccine induced protection.
T
