HERPESVIRUS PART2 Flashcards
Equine rhinopneumonitis virus is transmitted by arthropods
F
For immunisation against equine rhinopneumonitis virus mostly marker vaccines are
used
F
Equine rhinopneumonitis virus can cause abortion several weeks after acute infection.
T
Equine rhinopneumonitis virus causes cytoplasmic inclusion bodies in the foetal
hepatocytes.
F
Herpes-intranuclear incl bodies
Equid herpesvirus 4 more frequently causes encephalitis than Equid herpesvirus 1
F
EHV1 more freq
Horses should be vaccinated against equine rhinopneumonitis virus at least every 6
months
T
Equine rhinopneumonitis virus causes necrotic foci in the liver of the foetus
T(bc of abortion)
Fever and serous nasal discharge are early signs of acute equine rhinopneumonitis
T
Equine rhinopneumonitis virus can cause purulent metritis
F
Only equine herpesvirus 4 can cause abortion
F
-EHV-1
-EHV-4 rearly abortion
Pregnant mares abort usually in the acute phase of equine rhinopneumonitis
F
After EHV1 infection pregnant mares abort in the acute febrile stage
F
After 5th m
3m-3w after infection
Immunisation against equine rhinopneumonitis virus provides life long protection
F
Equine rhinopneumonitis virus is present only in North America
F(worldwide)
The equid herpesvirus 1 may cause abortion storms in studs
T
Pregnant mares abort usually several weeks after equid herpesvirus 1 infection
T
Vaccinated horses cannot get infected with Equid herpesvirus 1
F
Equid herpesvirus 1 associated abortions are always sporadic
F
Equid herpesvirus 1 may cause subclinical infection in horses
T
Only pregnant mares should be immunized against Equid herpesvirus-1 infection.
F
A single vaccination against Equid herpesvirus-1 provides life-long protection.
F
Equine rhinopneumonitis virus can cause only respiratory problems.
F
-respiratory
- CNS
- abortion
Both equid herpesvirus 1 and 4 can cause abortion.
T
A single vaccination of a horse against EHV-1 induces protection for several years
F
Equine herpesvirus-4 primarily causes abortion in horses
F
-rarley cause abortion
Equine herpesvirus-4 causes mainly respiratory symptoms in horses.
T
Equine herpesvirus-1 contains cross-reactive proteins against disease caused by EHV-4.
T
Vaccination containing Equine herpesvirus-1 also provides protection against EHV-4.
T-SL
Equine herpesvirus-1 primarily causes respiratory symptoms in horses.
F- abortion
Equine herpesvirus-1 primarily causes abortion
T
One vaccination is enough to prevent Equine herpesvirus-1.
F
Mares infected with Equine herpesvirus-1 have a febrile state, then abort.
T
Equine herpesvirus 2 may cause keratoconjunctivitis.
T
Equine herpesvirus 2 can cause respiratory disease only in young foals
T
Equid herpesvirus-2 may cause respiratory disease in foals.
T
Equid herpesvirus 5 may play a role in the equine multinodular pulmonary fibrosis.
T
Equid herpesvirus 5 causes encephalitis in foals
F
no encephalitis in equine herpesvirus
Equine herpesvirus-2 and 5 causes pustular vulvovaginitis
F
Equid herpesvirus-2 may cause Coital Exanthemas in horse.
F
EHV-3
Equid herpesvirus-2 and 5 cause diarrhoea and hepatitis in foals.
F
In horses infected with Equine herpesvirus-2, the symptoms are often unnoticed.
T
Equine herpesvirus-2 in horses does not cause symptoms in adult animals
T
It is enough to vaccinate mares 2 times against Equine herpesvirus-2
F
Equid herpesvirus 3 can cause lesions on the genital mucosa without abortion
T
-no abortion
- multiplication in genital mucosa
- nodules and pustules on the epithelial vagina
Equid herpesvirus 3 may cause coital exanthema in horses
T
Abortion is frequent complication of coital exanthema in mares
F
-NO ABORTION
Herpesvirus 3 can be transmitted through mating
T
Coital exanthema virus frequently causes abortion
F
Coital Exanthema virus does not cause abortion.
T
Equine Coital Exanthema can cause abortion storms in studs.
F
-EHV-1
Equine herpesvirus-3 cause abortion storms.
F
Canine herpesvirus infection can cause abortion.
T
Herpesvirus infection of adult dogs may result in reproductive disorders
T
Canine herpesvirus infection frequently appears with flu like symptoms
T
Feline herpesvirus infects dogs as well.
F
Liver lesions are frequently seen in puppies with Canid herpesvirus 1 infection.
T
Canine herpesvirus infection can cause blue eye disease.
F
canine adeno 1
Herpesvirus is frequently causing kennel cough
T
Hypothermia and weak immune response facilitate the severity of canid herpes virus
infection of dogs
T
Latent canine herpesvirus infection can be activated in pregnant bitches
T
Canine herpesvirus can cause transplacental infection
T
Pregnant bitches can be immunised against canine herpesvirus with inactivated vaccine
T
Herpes infection of pups 2-3 weeks old is fatal
T
Canine Herpes virus may remain in latency for years in infected animals.
T
Canine herpesvirus 1 may contribute to the kennel cough syndrome
T
Canid herpesvirus-1 may cause generalized infection and severe disease in young
puppies.
T
Inactivated vaccines are available for immunization against Canid herpesvirus-1.
T
Upper respiratory infection of Canid herpesvirus-1 may contribute to the kennel cough
syndrome
T
In utero infections with Canid herpesvirus may result in abortion.
T
Decreased body temperature has a negative effect on Canine herpesvirus infected
animals.
T
Herpesvirus infection of dogs is most severe in 3-6 months old puppies.
F (< 3 months )
Large dog kennels are usually seropositive for canine herpesvirus.
T
Canine herpesvirus infection can be deadly below 2-3 weeks of age.
T
Feline rhinotracheitis predisposes to pneumonia caused by Bordetella bronchiseptica.
T
Feline rhinotracheitis can cause foetal developmental anomalies in pregnant cats.
T
Felid herpesvirus does not cause viraemia and abortion.
F
Abortion is uncommon in feline rhinotracheitis of pregnant animals.
T-SL
Abortion is rare in rhinotracheitis infected pregnant cats.
T-SL
Sneezing is a typical sign of feline infectious rhinotracheitis
T
Feline herpesvirus does not cause respiratory signs, only viraemia and abortion
F
Conjunctivitis and muco-purulent nasal discharge are frequent signs of feline
rhinotracheitis
T
Conjunctivitis is a frequent sign of feline rhinotracheitis
T
Ulcerations of the oral mucosa are frequent signs of Feline Rhinotracheitis
F-SL
possible but rare, common in calciV
Clinical signs of feline infectious rhinotracheitis are similar to those of calicivirus
T
Feline infectious rhinotracheitis often results high mortality in susceptible young kittens.
F-SL
Feline infectious rhinotracheitis often results in abortion of pregnant queens
F-SL
Felid herpesvirus 1 spreads slowly in cat populations
F
Feline infectious rhinotracheitis is characterized by inflammation of the upper respiratory tract
T
Crowded area, poor general condition and stress contribute significantly to the
development of feline infectious rhinotracheitis
T
Prolonged contact is usually needed for successful transmission of feline infectious
rhinotracheitis
F-SL -spreads quickly
Feline infectious rhinotracheitis can be treated with specific hyperimmune sera
T
Feline Infectious Rhinotracheitis occurs in summer because Felid herpesvirus-1 is transmitted by mosquitoes
F
Feline herpesvirus-1 is mainly transmitted by mosquitoes.
F
Feline Infectious Rhinotracheitis virus is transmitted mainly through the air.
T-SL
The Feline Infectious Rhinotracheitis virus is very contagious to cats
T
Mucous is a frequent sign of Feline Infectious Rhinotracheitis.
T
The infectious laryngotracheitis is seen only in young chickens
F
-mainly in growersand adults
-chicken = most
-phesant
-turkey
quail
Diarrhoea is frequent in infectious laryngotracheitis of chickens
F
-dyspnoea
-eyelid oedema
Infectious laryngotracheitis virus strains may differ in virulence
T
Encephalitis is a frequent complication in Infectious Laryngotracheitis of chickens
F
Ducks are the most susceptible to infectious laryngotracheitis virus
F
The infectious laryngotracheitis causes pseudomembrane formation in the oesophagus
F- trachea
Chickens above 6 weeks of age are not susceptible to infectious laryngotracheitis
F
The infectious laryngotracheitis can cause viraemia and pneumonia in young
F
Mainly growers and adults
Conjunctivitis is a frequent sign of infectious laryngotracheitis
T
Infectious laryngotracheitis virus is typically transmitted by the germinative route
F
Infectious laryngotracheitis can be deadly in chickens
T
Infectious laryngotracheitis is most frequently seen in day-old chickens
F
Infectious laryngotracheitis virus is shed mainly with faeces
F
Infectious Laryngotracheitis virus replicates in the liver of cats
F
Infectious Laryngotracheitis virus replicates in the upper respiratory tract
T
Germinative route is the most important factor in the transmission of the Infectious
Laryngotracheitis virus
F
-NO GERMINATIVE INFECTION!
Tracheal lesions of Infectious Laryngotracheitis may be similar to those of fowl pox.
T
The Infectious Laryngotracheitis virus does not cause viraemia
T
Infectious Laryngotracheitis is most frequently seen in day-old turkey.
F
-Chicken!
Infectious Laryngotracheitis virus is present worldwide
T
Infectious Laryngotracheitis usually occurs clinically under 6 weeks of age.
F
Infectious Laryngotracheitis causes changes in the larynx and upper airways.
T
Infectious Laryngotracheitis virus invades the kidneys after viraemia
F
Infectious Laryngotracheitis also occur in Hungary.
T
Infectious Laryngotracheitis of poultry spreads germinatively
F
Infectious Laryngotracheitis causes eggshell deformation.
F
Infectious Laryngotracheitis frequently damages the oviduct of hen
F
Infectious Laryngotracheitis can be deadly in chickens.
T
Mortality of infectious laryngotracheitis can go up to 50%.
T
higherst70% in typical virulent virus
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
Attenuated
Trivalent
Recombinant
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
Turkey herpes
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
4-7wk
Over 8wk subclinical
Lymphoproliferative form of Mareks disease is an acute disease
T
Neurological form of Mareks disease can be present in 4 week old chicken
F
Growers and young hens
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
In case of viraemia the GaHV2 spreads to fowl’s organs in red blood cells
F
Germinative infection does occur in Mareks disease
F
The acute form of Mareks is primarily a tumour formation.
T
Marek disease is usually seen in chickens below 2 weeks of age
T-SL
Marek disease virus is shed with faeces in high titre
F
feather follicles- inhal
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
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
Domestic fowl, phesant, quail, turkey
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
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 ś disease virus is transmitted by inhalation.
T
Marek ś disease virus can t́ be prevented by vaccination, because it ́s immunosuppressive.
F
The pathology lesions of acute Marek ś disease and avian leucosis can be similar.
T
The Marek ś disease virus causes immunosuppression.
T
The acute form of Marek ́s disease is characterized by lymphoid cell proliferation.
T
The neurological form of Marek ś disease has a mass appearance
F
The highly virulent strains of Marek ś disease may cause tumours in turkey
T
The incubation time of acute Marek ś disease is 1-2 days.
F
acute 6w
chronic 6m
The neurological form of Marek ś disease leads to significant liver degeneration.
F
Both serotypes of the Marek ś virus cause disease in geese.
F
North America is free of Marek ś disease.
F
Marek’s disease only occurs in domestic fowl
T-SL
Marek’s disease virus is shed mainly via the faeces.
F
The neoplastic form of Marek disease is caused by high virulence strains.
T
Vaccination is used for the prevention of Marek ś disease
T
We can differentiate Marek’s disease from reticuloendotheliosis only by lab diagnostics
methods
T
Prevention against Marek ś : 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 ś disease.
T
No vaccination is needed against Marek’s disease
F
Marek’s disease viruses are uniform in their virulence.
F
Highly virulent Marek’s disease viruses may break through vaccine induced protection.
T
for immunisation against eq rhinopneumanitits virus mostly marker vaccines are used
F
horses should be vaccinated against EHV1 every 6 m
T-SL
Equine herpesvirus 2 may cause keratoconjunctivitis in foals
T
Fe herpes 1 is moderately contagious, spreads slowly in cat populations
F- v contagious
Germinative infection does occur in Markes disease
F
Mareks disease usually starts as an airborne infection
T
chickens shed the mareks disease virus via feather folliculiar epithelial cells
T
Mareks disease is primarily spread via the aerogenic route
T
Mareks disease in the blood multiplies in the endothelial cells
F
Mareks disease is a beta herpes virus
F
alpha
Mareks disease primarily targets day old chickens
F
The neoplastic form of Marek disease is caused by low virulence strains.
F
The highly virulent Marek’s disease viruses may cause tumours in turkeys
T
