HERPESVIRUS Flashcards
Herpesviruses are good antigens.
F
Alphaherpesviruses are host specific slowly multiplying (>24hrs) viruses
F (betaherpesvirus is more than 24 h)
<24 h
Alphaherpesviruses may cause latent infection in neurons of ganglia
T
Herpesviruses are sensitive to detergents
T
Some herpesviruses have a broad host spectrum (euryxen)
T
- aujeszky
- malignant catarrhal fever
- turkey herpesvirus
Gammaherpesviruses may cause latent infection in neurons of ganglia
F
Herpes viruses are resistant to detergents
F
Herpesviruses are generally weak antigens
T
Herpesviruses can cause latent persistent infections
T
Herpesviruses are typically stenoxen viruses, but there are significant exceptions
T
Herpesviruses are strong antigens, therefore single vaccinations provide lifelong
protection
F
Herpesviruses are enveloped viruses, therefore they are sensitive to detergents
T
There are no serological cross-reactions between different herpesvirus species.
F
Because the genome of herpesvnruses is very stable, no attenuated mutant vaccine
strains are available.
F
Infectious bovine vulvovaginitis virus strains cause abortions and foetal deformities
F
Herpesvirus infections frequently result in latent virus carry.
T
Herpesviruses usually cause latent infections and life-long virus carries
T
Infectious bovine rhinotracheitis virus can cause abortion.
T (sporadic , mainly in heifers)
The use of marker vaccines can help the eradication of infectious bovine rhinotracheitis
virus.
T
The most frequently used eradication strategy for IBRV is selection with the help of
marker vaccines
T
Marker vaccines can be used in IBRV eradication programs in cattle farms.
T
Antibodies against infectious bovine rhinotracheitis virus (IBRV) might be detected in the
milk
T
Conjunctivitis and blepharitis are signs of infectious bovine rhinotracheitis.
T
The infectious bovine rhinotracheitis virus (IBRV) causes haemorrhagic gastroenteritis.
F
Infectious bovine rhinotracheitis virus also causes mastitis in cows
F
Infectious bovine rhinotracheitis virus is transmitted by arthropods
F
Aerogen, po
Infectious bovine rhinotracheitis virus can cause fatal encephalitis in calves
T
Infectious Bovine Rhinotracheitis virus frequently causes encephalitis in old cow and
bulls
F (calves)
Infectious Bovine Rhinotracheitis virus frequently causes encephalitis in old sow and bulls
F (calves)
Infectious Bovine Rhinotracheitis can be endemic on cattle farms
T
Infectious bovine rhinotracheitis virus can cause skin lesions on the genitals
T
Bulls can shed the infectious bovine rhinotracheitis with semen
T
Pregnant cows should be immunized with inactivated vaccines against IBRV
T
Attenuated vaccines are used in pregnant cows against Infectious Bovine Rhinotracheitis
virus
F
Because Bovine herpesvirus l causes latent infections; it is not possible to eradicate it
from a cattle population
F
Bovine herpesvirus l may cause encephalitis in calves.
T
IBRV may cause encephalitis in calves.
T
Only inactivated vaccines are available against Bovine herpesvirus l.
F
Pregnant cows can be immunized against IBRV only with attenuated vaccines.
F
Bovine herpesvirus 1 may be transmitted through semen.
T
Seropositive cattle cannot be carriers of the Infections Rhinotracheitis virus
F
Infectious Bovine Rhinotracheitis virus (IBRV) can be transmitted through vectors.
F
Bovine herpesvirus l may cause encephalitis in calves.
T
Only inactivated vaccines are available against Bovine herpesvirus l.
F
The IBR virus causes nephritis in calves usually in the age between one and six months.
F
Infectious Bovine Rhinotracheitis (IBR) cause serous nasal discharge.
F
Infectious Bovine Rhinotracheitis in 6-month-old calves usually causes pneumonia.
T
Infectious Bovine Rhinotracheitis in cattle 6 months of age can cause encephalitis.
F ( <5 months old)
Infectious Bovine Rhinotracheitis often cause genital lesions with vesicles.
T
Infectious Bovine Rhinotracheitis may cause inflammation of conjunctiva
T
Infectious Bovine Rhinotracheitis cause purulent discharge.
T
In Hungary the gE-negative marker vaccine is to be used in the control of Infectious Bovine Rhinotracheitis.
T
Infectious Bovine Rhinotracheitis is rapidly spread within the herd.
F
Slow spread
Infectious Bovine Rhinotracheitis is no longer present in Hungary.
F
The respiratory form of Infectious Bovine Rhinotracheitis is often followed by genital symptoms.
F
Infectious Bovine Rhinotracheitis spreads slowly within a herd.
T
We can see characteristic clinical signs of Infectious Bovine Rhinotracheitis in day-old calves
F
We are doing Infectious Bovine Rhinotracheitis virus eradication programs in Hungary
T
Infectious Bovine Rhinotracheitis virus mainly cause encephalitis in cattle older than 6 months.
F ( <5 months)
Infectious Bovine Rhinotracheitis mainly causes pneumonia in 1-6 months old calves.
T
Infectious Bovine Rhinotracheitis is rare, BHV-1 only affects cattle.
F
In the transmission IBRV, the most important route is the germinative route
F
Genital form of IBR is often followed by abortion
F
IBR can occur in several clinical forms.
T
\IBR is a frequent infection, cattle and its closest relatives are affected
T
Bovine Herpes virus 2 frequently causes abortion
F
Bovine herpes mamillitis virus can cause mastitis in cows
T
Bovine herpes mamillitis virus may cause lesions on the muzzle of suckling calves
T
The bovine herpes mamillitis virus causes lesions on the skin of the milkers, therefore it is a zoonotic agent.
F
Bovine herpesvirus 2 may cause generalised skin lesions
T
Bovine herpesvirus 2 is the most frequent primary cause of mastitis in cattle
F
Bovine Herpes Mammillitis virus causes milkers’ nodules in humans.
F
Bovine Herpes Mammillitis virus may cause lesions on the lips of milking calves.
T
Regarding Bovine Herpes Mammillitis, mainly heifers show clinical signs
T
Swine inclusion body rhinitis virus is causing mainly subclinical infection.
T
Bloody nasal discharge can be a sign of swine inclusion body rhinitis
T
Clinical manifestation of swine inclusion body rhinitis is usually seen in piglets less than 3
weeks old
T
Inclusion body rhinitis is predisposing to fatal respiratory disease in pigs
F
Suid herpesvirus 2 may cause upper respiratory tract disease in piglets
T
Swine Inclusion Body Rhinitis is usually seen in piglets
T
The Swine Inclusion Body Rhinitis virus may cause reproductive problems in sows.
T
Malignant catarrhal fever is mostly fatal in sheep.
F
Malignant catarrhal fever is an alphaherpesvirus causing latent infection in ganglia
F
Malignant catarrhal fever develops only in suckling calves up to two weeks of age.
F
Malignant catarrhal fever can be seen only in calves younger than one month.
F
Malignant catarrhal fever causes only mild respiratory disease in sheep
F
Sheep should be immunised against malignant catarrhal fever virus
F
Malignant catarrhal fever may develop in swine too
T
Malignant catarrhal fever is frequently seen in cats
F
Cattle should be vaccinated against malignant catarrhal fever
F
Goats are the reservoir hosts of the malignant catarrhal fever virus
F
The incubation period of malignant catarrhal fever is less than one week
F (2 weeks to several months)
Malignant catarrhal fever is quickly spreading from cattle to cattle.
F
Cattle should be vaccinated against malignant catarrhal fever in every six months.
F
The malignant catarrhal fever is caused by Bovine Herpes virus-2
F
Ovine herpesvirus 2
AlHV-1
Malignant Catarrhal Fever is usually lethal in cattle.
T
Rodents are the reservoir hosts of the Malignant Catarrhal Fever virus.
F
Swine are the reservoir host of the Malignant Catarrhal Fever virus.
F
The Malignant Catarrhal Fever is caused by Bovine herpesvirus-2
F
We vaccinate calves 2 times against Malignant Catarrhal Fever
F
Swine are affected by Malignant Catarrhal Fever
T
Malignant Catarrhal Fever does not occur in Europe.
F
Malignant Catarrhal Fever can cause diarrhoea
T
Malignant Catarrhal Fever spreads slowly within a cattle herd.
F
Malignant Catarrhal Fever occurs if we keep cattle and sheep together
T
Malignant Catarrhal Fever does not occur in Hungary
F
The Aujeszy’s disease virus is stenoxen.
F
Wild boars are not susceptible to Aujeszy’s disease virus.
F
Abortion of sows can be a sign of Aujeszys disease
T
Pregnant sows may abort in Aujeszky’s disease.
T
In swine the most serious CS of Aujeszky´s disease are usually seen in piglets
T?
Dogs should be vaccinated against Aujeszys disease
F
Carnivores are the reservoir hosts of the Aujeszky’s disease virus
F
Swine and wild boar
The Aujeszys disease in cats is usually a mild respiratory disease with quick recovery
F
The signs of Aujeszys disease in dogs are similar to rabies
T
The natural reservoir hosts of the Aujeszys disease virus are rodents
F
The Aujeszy disease causes fatal pneumonia in Ruminants and Carnivores
F
The Aujeszy disease is zoonosis
F
The symptoms of Aujeszys disease in ruminants is similar to rabies
T
The Aujeszy disease virus may infect several mammalian hosts
T
Aujeszys diseases can be latently carried by pigs in the nervous system
T
Central nervous signs of the Aujeszky’s disease are rarely seen in adult swine
T
Convalescent swine are life-long carriers and potential shedders of Aujeszky’s disease
virus
T
Swine are immunized against the Aujeszky’s disease virus usually with gE negative marker vaccines
T
Rats are the reservoir hosts of the Aujeszky’s disease.
F
Swine and wild boar
The Suid herpesvirus 1 frequently causes encephalitis in humans.
F
Liquid manure may play a role in the transmission of Suid herpesvirus 1 from swine to
cattle
T
Discriminative ELISA tests may differentiate between vaccinated swine wild type Suid-
herpesvirus infected ones
T
In adult swine the most frequent manifestation of Aujeszky’s disease is encephalitis
F
Aujeszky’s disease virus infection in adult pigs is frequently subclinical.
T
Pigs infected with wild type Aujeszky’s disease virus can be differentiated from
vaccinated ones by serological tests (i.e ELISA).
T
Cattle should be vaccinated against Malignant Catarrhal Fever.
F
Aujeszky ś disease can occur in pigs and cats.
T
Aujeszky ś disease in pigs causes viraemia
T
Aujeszky ś disease in cats spreads along the nerves.
T
Aujeszky ś disease can cause respiratory signs in adult pigs.
T
Aujeszky ś disease causes fever in day old piglets
F
In adult
Aujeszky`s disease causes pneumonia in susceptible piglets.
F
Aujeszky`s disease doesn’t cause clinical signs in susceptible piglets
F
Aujeszky`s disease causes pruritus in susceptible piglets
F
Aujeszky`s disease causes 20-30% mortality in susceptible piglets.
F (100% mortality!)
Older pigs are more frequently affected by Aujeszky ś
F
Conjunctivitis is a frequent sign of duck viral enteritis.
T
Only sporadic clinical cases of duck viral enteritis are seen in an affected flock
F
Mallards may transmit the duck enteritis virus to domestic ducks kept on lakes
T
Liver dystrophy is a frequent lesion of duck viral enteritis (duck plaque)
T
Wild ducks may be persistently infected with duck plaque (duck enteritis) virus
T
Duck plaque virus may be shed life long by animals recovered from the disease
T
Duck plaque (viral enteritis) can’t cause high mortality without secondary bacterial infection
F
Duck plaque and duck viral enteritis are two names of the same diseas
T
Duck viral enteritis is seldom fatal
F
Treatment is the most effective control method for duck viral enteritis.
F
Duck plague is more sever in wild birds than in domestic ducks.
F
Duck plague virus damages blood vessel endothelium
T
Duck plague only affects young ducklings
F
Duck plague is only seen in day old ducklings
F
Duck viral enteritis is usually mild, osmotic diarrhoea.
F
Duck plague infects exclusively domestic and wild ducks
F
Antibiotic treatment is the most effective control method for Duck Viral Enteritis.
F
Duck plague infects exclusively domestic and wild ducks.
F
Beak deformity is a typical sign of Duck Plague.
F
Muscovy duck are resistant to the Duck Viral Enteritis.
F
Duck Plague/Duck viral Enteritis cause high mortality in all ages
F
Duck Plague/Duck viral Enteritis clinical signs in young ducks are only seen in birds up to
4 weeks of age.
F
Vaccines containing a live attenuated strain can be used for prevention against Duck
Plague
T
Duck Plague/Duck viral Enteritis vaccination is not needed as clinical signs are mild
F
Duck Plague virus can “settle” in wild ducks.
T
Duck Plague is an outbreak of Avian influenza in ducks, with a host-adapted version of
the virus.
F
Duck Plague only causes hepatitis in young ducks.
F
Duck Plague only causes disease in ducks and geese
F
Duck Plague virus causes high mortality in both old and young birds
F
Duck Plague also affects geese.
T
Duck Plague is a disease of young ducks only
F
Duck Viral Enteritis can affect all age groups.
T
Depression, respiratory signs and bloody diarrhoea are main signs of Duck Plague.
T
In most cases the Duck Plague disease remain symptomless.
F
Duck Plague is more severe in wild birds than domestic ducks.
F
Conjunctivitis is a frequent sign of Duck Plague.
T
Pigeon herpesvirus mainly causes encephalitis in adult pigeons.
F
Pigeon herpesvirus infections usually result a haemorrhagic deadly disease.
F
Pigeon herpesvirus is characterised by focal necrosis in the liver in pigeons.
T
Pigeon herpesvirus kills mostly day old pigeons
F
Pigeon herpesvirus infection causes feather development problems
F
Pigeon herpesvirus infections mainly affect young pigeons.
T
Pigeon herpesvirus mainly causes encephalitis in adult pigeons
F
Pigeon herpesvirus infection is frequently combined with adenovirus and circovirus
infection.
T
Pigeon herpesvirus may cause respiratory disease in young pigeons.
T
Pigeon herpesvirus causes conjunctivitis, rhinitis, pharyngitis and diarrhoea in the acute
stage.
T
Pigeon herpesvirus infection is related to Marek’s disease.
T
Pigeon herpesvirus has the highest mortality in day-old pigeons.
F
Diarrhoea and nasal discharge are common in Pigeon herpesvirus infections
T
