Short virus topics T/F 3 Flashcards
Infertility and abortion are the most specific signs of bovine adenovirus infection
False
Bovine adenovirus 10 can cause haemorrhagic enteritis in cattle
True
Insufficient colostrum uptake increases the severity of adenovirus-induced diseases in calves
True
Adenoviral infection can cause hemorrhagic, necrotizing colitis in Suckling lambs
True
Canine adenonvirus serotype 2 causes central nervous system disease in pups
False
Rubarth disease occurs in birds.
False
Canine adenovirus 2 infects the upper respiratory tract
True
The Rubarth disease in dogs is not associated with neurological conditions
False
in the case of acute disease Rubarth cause death within 1-2 days
False
canine adenovirus serotype 1 may cause encephalitis
True
dogs carry canine adenovirus serotype 1 usually in the spleen
False
Both CAdV-2 and CAdV-1 serotypes can be used in vaccinate against Rubarth´s disease
True
Canine adenovirus infection is sporadic in Hungary
True?
Causative agent of Rubarth´s disease is CAdV-2
False
Canine infectious hepatitis is caused by several adenovirus serotypes
False
Canine infectious hepatitis is characterized by hepatitis and abortion
False
For Canine infectious hepatitis, Hepatitis and encephalitis are the main clinical signs
True
Canine infectious hepatitis vaccines usually contain CAdV-2 strain in live form
True
Dogs with Rubarth´s disease have a long term carrier status
True
CAdV-1 causes encephalitis in certain carnivororous hosts
True
Dogs carry Canine infectious hepatitis serotype 1 mostly in the spleen
False
Rubarth’s disease is a disease of older cats
False
Rubarth’s disease is caused by CAdV-1
True
No long term carrier stage is seen in canine adenovirus serotype 1 infection
False
Infectious canine hepatitis is uaually seen in elderly dogs
False
There is serological cross protection between Canine adenovirus type 1 and 2
True
Canine adenovirus 1 infects only dogs
False
Dogs may develop transient bilateral corneal opacity after canine adenovirus infecton
True
The virus that causes chicken-splenomegaly and pheasants marble spleen illness also causes haemorrhagic enteritis in turkeys.
True
During the turkeys haemorrhagic enteritis four weeks of age is the most serious
True
EDS only occurs in hens.
False
The egg drop syndrome fever, general symptoms.
False
Egg drop syndrome is a disease of chickens of all age groups.
False
It is characteristic with mild diarrhea and rough, hard eggshell in EDS.
False
Egg drop syndrome infects duck and geese as well
True
Eggdrop syndrome usually appears at the beginning of laying season
False
Mild diarrhea and thin shelled eggs are seen in EDS
True
Inactivated vaccines are used for the prevention of egg drop syndrome
True
Egg drop syndrome is caused by an aviadenovirus
False
Egg drop syndrome virus can spread germinatively
True
Egg drop syndrome occurs in Hungary
True
Avian adenovirus spread both vertically and horizontally
True
Chicken adenoviruses are species-specific
False
Chicken adenovirus can cause embryonic death, bronchitis, and inclusion body hepatitis.
True
Chicken adenoviruses mainly cause encephalitis in young chicken.
False
Adenovirus pathogenicity is very low, do not cause disease
False
Adenovirus may cause hydropericardium syndrome in chicken and geese
True
The turkey hemorrhagic enteritis and the marbele spleen disease are caused by the same virus
True?
The egg drop syndrome virus damages the oviduct of day old chicken
False
In young geese, respiratory disease may be caused by the EDS virus
True
Aviadenovirus infection of geese may cause lesions similar to the Derzsy’s disease
True
feather and beak deformities may appear after circovirus infection of geese and pigeons
True
beak and feather disease lesions are sometimes obvious only after molting
True
The parrot species in the circovirus infection symptoms often occur after molting
True
Pigeon circovirus infections do not occur in Hungary, the disease is prevented by vaccination
False
Circoviruses can infect pigeons
True
Vaccines are available for Pigeon Circovirus
False
Clinical signs of PBFDV (Psittacine Beak and Feather Disease Virus) are only seen at time of moulting
False
Pigeon circovirus frequently appear in diseases together with viruses
True
Inactivated vacines are used against pigeon circovirus infections
False
circovirus infection can result in high mortality of chickens over three weeks of age
False
Infectious chicken anaemia is seeing clinically only in young chickens
False?
Infectious chicken anaemia is a parvovirus infection which courses clinical signs in all age groups
False
No vaccination is needed for infectious chicken anaemia as the clinical signs are mild
False
atrophy of the thymus is a post-mortem finding of chicken circovirus
True
circovirus replicates in the bursa of Fabricius and the thymus
True
vaccination can protect hens and chickens against the chicken anaemia
True
Avian circovirus infections cause high morbidity and low mortality
True
CIA-virus is a gyrovirus
True
In CIA, most symptoms are observed in the first month
True
CIA infection involves destruction of the lymphoid and myeloid cells
True
CIA virus induces apoptosis of activated T cells
True
Pigeons can be infected by CIAV
False
CIA virus does not replicate in the thymus
False
CIA virus spread horizontally and vertically
True
CIA in day old chickens causes a long lasting immunosuppression
True
The circovirus has circular RNA in its genome
False
Infection of day old chickens with chicken anaemia virus leads to immune suppresion
True
Chicken anemia virus infection can cause death of chickens below 3 weeks of age
True
Circovirus started with contaminated Marek’s vaccines
True?
PCV2 infections are sporadic
False
Porcine circovirus 1 may cause embryonic disease
False
Porcine circovirus 1 is not pathogenic
True
the presence of PCV2 in pigs decreases the efficiency of vaccines
True
Swine circovirus infection is the frequent infection with clinical signs after weaning
True
Porcine circoviruses can not be responsible for reproductive disorders
False
Porcine circoviruses cause various diseases
True
Porcine circovirus can multiply in the myocardium of foetus
True
Reproductive disorders caused by porcine circoviruses are only significant in North America
False
Circovirus cause skin lesions in swine
True
Rare infection causing clinical signs only in piglets before weaning(PCV)
False
Prevention is with live attenuated vaccines(PCV)
False
General preventative rules & recently inactivated or vector vaccination can be used(PCV)
True
Porcine circoviruses are genetically and antigenically uniform
False
Porcine circoviruses are present worldwide
True
Porcine circoviruses may cause inapparent/subclinical infections
True
Porcine circovirus vaccines are available both for sows and for piglets
True
Porcine circovirus can be transmitted by mice and rats
True
We can detect PMWS virus from marcrophages
True
PMWS virus replicates in heartmuscle and gallbladder
False
PMWS causes atrophy of lymphnodes
False
PMWS is caused by a circovirus
True
Typical pathological findings PMWS it’s enlarged mesenteric lymph nodes
True
PMWS appear after weaning
True
PMWS appears as chronic disease of nervous system
False
PDNS is a frequent infection with clinical signs after weaning
True
Vaccinations against PCV2 may increase the incidence of PDNS
True
PDNS is only caused by PCV-2
False
PDNS disease is an immunocomplex disease
True
PDNS has been widespread in Hungary since 1998
True
PDNS is only caused by PCV-1
False
PDNS is not caused by PCV
False
PDNS does not occur in Hungary
False
PDNS occurs primarily in the weeks following the selection/weaning
True
PDNS is caused only by circoviruses
False
PRDC is caused by a porcine circovirus
True
Circovirus can be responsible for the porcine respiratory disease complex
True
