Circovirus Flashcards
The reproduction of the circovirus continuous in the dividing cells
True
The circovirus is too small so it’s a bad antigen
False
The circovirus is a good antigen
True
Circovirus infections are immune suppressive
True
Circovirus can easily be cultured in different homologous cell lines
False
Circoviruses can be cultured easily in many cell lines
False
Resistance of circovirus is very low, in the environment they are inactivated within a day
False
The resistance of Circoviruses is high, they remain infectious in the environment for several
months
True
Causes generalized lymphoid depletion
True
Only causes the depletion of B-lymphocytes
False
Canine circoviruses are present worldwide
False
Circovirus are very resistant viruses
True
The circovirus has circular RNA in its genome
False
Swine circovirus causes lesions in multiple organs and strong immunosuppression
True
Porcine circovirus can be transmitted by mice and rats
True
Porcine circovirus vaccines are available both for sows and for piglets
True
Detection of PCV2’s DNA is enough for the correct diagnosis
False
Four species of swine circovirus were described
True
The porcine circovirus 2 is proven to be immunosuppressive
True
PCV2 detection in foetal myocardium is pathognomic value
True
Porcine circovirus replicates in the myocardium of the foetus
True
In pigs the porcine circovirus 2 can cause BFD
False
The porcine circovirus can replicate in the foetus
True
The clinical signs, pathological and histopathological examination suggest PCV2 induced
disease
True
PCV2 can cause respiratory signs
True
The primer replication of PCV2 is in lymphoid tissues of the throat
True
PCV2 infection does not always cause clinical signs
True
Porcine circovirus 2 always causes clinical signs in pigs
False
Porcine circovirus 2 always causes clinical signs in cattle
False
There is no efficient vaccine against PCV2
False
The porcine circovirus can replicate in the foetus
True
Circovirus in pigs can be Subclinical.
True
Porcine circoviruses are responsible for a variety of clinical conditions
True
Porcine circoviruses cannot be responsible for reproductive disorders
False
Porcine circoviruses are present worldwide
True
Porcine circovirus can be transmitted by mice and rats
True
Porcine circoviruses cause severe haemorrhagic diseases in pigs
True
Porcine circoviruses are genetically and antigenically uniform
False
Porcine circoviruses may cause a variety of diseases
True
For prevention of Swine circovirus disease only general hygienic measures can be used
False
Swine circovirus can cause retarded growth and strong immunosuppression
True
Swine circovirus caused disease occurs worldwide, it is frequent
True
For prevention of swine circovirus disease, inactivated vaccine is available
True
Swine circovirus causes only respiratory signs
False
Swine circovirus may be shed in excretions for several months after recovery
True
For prevention of Porcine circovirus disease vaccines are available
True
The incubation period of Porcine circovirus caused disease is about 2-4 weeks
True
Incubation period of porcine circovirus disease is short, some days
False
Porcine circovirus-2 causes clinical signs mainly after weaning
True
Predisposing factors for Porcine Circovirus associated disease can be: Vaccines. The virus variant. Virus strain
True
Predisposing factors for Porcine Circovirus associated disease can be Food management
False
PCV2 can cause: Enteric disorders. Disorders in the nervous system. Respiratory disease. Reproductions disorders
True
Porcine circovirus-1 may damage the foetus
False
Porcine circoviruses cannot be responsible for reproductive disorders
False
Porcine circoviruses replicate in the heart of the foetus
True
Porcine circovirus may cause inapparent infections
True
Circovirus can be responsible for the Porcine Respiratory Disease Complex
True
Reproductive disorders caused by Porcine circoviruses are only significant in North
America
False
Circovirus cause skin lesions in swine
True
A clinical sign of PMWS can be a progressive weight loss
True
PMWS is a type 3 hypersensitivity
False
PMWS is a type 4 hypersensitivity
False
One of the most common pathological signs of PMWS is glomerulonephritis
False
Typical pathological finding of PMWS is enlarged mesenteric lymph nodes
True
Typical pathological finding of PMWS is pneumonia
True
A clinical sign of PMWS can be haemorrhages in the skin
False
In pigs the porcine circovirus 1 can cause PMWS
False
In pigs the porcine circovirus 2 can cause PDNS
True
One of the most common pathological signs of PDNS is glomerulonephritis
True
PDNS is an allergic disease
False
The appearance of PDNS is related to the good antigenicity of PCV2
True
PDNS is a type III hypersensitivity
True
PDNS is a type IV hypersensitivity
False
PDNS may develop without porcine circovirus 2
True
One of the most common clinical signs of PDNS is multifocal circular red skin disease
True
Porcine dermatitis nephropathy can only be caused by circoviruses
False
Porcine dermatitis and nephropathy syndrome are only caused by PCV-2
False
PDNS disease is an immunocomplex disease
True
PDNS is only caused by PCV-1
False
PDNS does not occur in Hungary
False
PDNS occurs primarily in the weeks following the selection/weaning
True
PDNS is caused by both PCV-1 and PCV-2
False
PDNS is not caused by PCV
False
PDNS has been widespread in Hungary in Hungary since 1998
True
PDNS is a rare infection causing clinical signs only in piglets before weaning
False
PDNS is a frequent infection with clinical signs after weaning
True
Prevention of PDNS is with live attenuated vaccines
False
Regarding PDNS, general preventative rules and recently inactivated or vector
vaccination can be used
True
