PRRS Coronaviridae Flashcards
PRRS is caused by an arterivirus
T
PRRS is caused by a coronavirus
F
The clinical signs of PRRS can be abortion like that of SMEDI
T
Isolation of PRRS in cell culture can be easily performed in any laboratory
F— replication in vitro is hard beacuse : Green monke african kidney cells-vero cells cotton rat …
PRRS has only highly pathogenic variants
F
Respiratory signs of PRRS occur just in sows
F
PRRS virus replicates in macrophages
T
PRRS virus replicates in T-lymphocytes
F
The pathological signs of PRRS is typical because the lymph nodes are never enlarged
F
PRRS virus affects the respiratory system in young piglets
T
PRRS cause digestive sign in adult
F
PRRS has 2 phases
T
Target cells of PRRSV are alveolar epithelial cells
F
PRRS can only be isolated in porcine kidney cells
F
PRRS causes immune suppression in prolonged cases
F
Attenuated and inactivated vaccines are available against PRRS
T
PRRS virus causes severe intestinal problems in adult pigs
F
PRRS is characterized by respiratory disease in adult pigs
F
PRRSV attacks the active macrophages
T
For PRRS prevention we can get a very good immunization with inactivated vaccines
F
PRRS: reproductive and respiratory problems and others with other virulence
T
Maternal immunity protects only short time against PRRS
T
Porcine reproductive and respiratory virus (PRRSV) can cause abortion only in the advanced stage of pregnancy (over 90 days
F
Only inactivated vaccines can be used for the prevention against PRRSV
F
Porcine reproductive and respiratory virus (PRRSV) propagates in lymphatic cells
T
PRRSV infection may influence the reproductive performance of boars
T
Porcine reproductive and respiratory virus (PRRSV) is a zoonotic agent
F
Porcine parvoviruses and PRRSV may cause similar disease in sows
T
Porcine reproductive and respiratory vines (PRRSV) does not cause clinical signs in boars
F
Inactivated vaccines alone cannot induce protective immunity against PRRSV
T
Boars can transmit porcine reproductive and respiratory syndrome virus in the semen
T
Porcine reproductive and respiratory syndrome virus cannot cause abortion, only infertility of the sows.
F
There are no vaccines for the prevention of Porcine reproductive and respiratory syndrome
F
The blue ear disease is caused by dog coronavirus
F—PRRS=Blue ear disaes
The blue ear disease is caused by FIP
F
The blue ear disease is caused by chicken coronavirus
F
The blue ear disease is caused by PRRS
T
Does PRRS virus have 3 genotypes
F
Oedema can be a sign of PRRS
T
PRRS is deadly in adult animals
F
The Porcine reproductive and respiratory syndrome (PRRS) is only present in North- America
F
The PRRS virus may cause reproductive problems in boars
T
PRRS: cyanosis is one clinical symptom
T
Human coronavirus was not known before 2020
F
Recombination between coronaviruses is frequent
T
Recombination between coronaviruses is rare
F
Coronaviruses are of two origin: bird or bat
T
Human coronaviruses usually cause death
F
Coronaviruses are enveloped viruses
T
BCoV can cause haemagglutination
T
IBV can cause haemagglutination
F
PDCoV can cause haemagglutination
F
CCoV can cause haemagglutination
F
TGEV can cause haemagglutination
F
FIPV can cause haemagglutination
F
HeCoV can cause haemagglutination
T
PEDV can cause haemagglutination
F
Coronaviruses can survive for months in the environment
F
Coronaviruses frequently mutate and recombine
T
Coronaviruses have a weak physical resistance
T
Typical sign of TGE is vomiting and diarrhoea
T
TGE virus does not reach the mammary gland
F
TGE virus can replicate in the lungs
T
The colostral immunity against TGE protects the piglets from the disease
T
The antibodies against porcine respiratory coronavirus protect the pigs against TGE
T
TGE virus does not reach foetuses
T
TGE virus does not cause haemagglutination in vitro
T
TGE virus can cause haemagglutination in vitro
F
TGE can cause 100% mortality in newborn piglets
T
TGE virus causes respiratory signs in piglets
F
The pathology of TGE is not characteristic
T
TGE virus does not cause dehydration
F
The pathognomonic sign of TGE is necrosis in the large intestine
F
TGE virus can replicate in the intestine
T
Porcine transmissible gastroenteritis (TGE) is completely eradicated in Europe
F
TGE causes 100% mortality in sows
F
The incubation time of TGE is usually 5-7 days
F
TGE virus infects the digestive and the respiratory systems
T
TGEV is widespread and fully replaced porcine epidemic diarrhoea (PED) virus
F
Porcine respiratory coronavirus induces cross-protection against PED
F
Today TGE occurs in an enzootic form
T
The characteristic symptoms of TGE are vomiting and diarrhoea
T
TGE infects only swine
F
TGE virus causes high morbidity
T
Transmissible gastroenteritis is the more severe in piglets than in adult swine
T
The mortality caused by transmissible gastroenteritis of swine is the highest among old sows
F
Transmissible gastroenteritis of swine is a widespread disease, causing high losses in Europe
F
The lesions of transmissible gastroenteritis of swine are in the gastric mucosa and in the small intestine
T
Transmissible gastroenteritis of pigs is more frequent in the tropical countries that the moderate climate
F
There is no cross protection between transmissible gastroenteritis vines and the pulmonary coronavirus of pigs
F—there is also same vaccine
Transmissible gastroenteritis virus can cause clinical disease only in pigs
T
Transmissible gastroenteritis virus spreads rapidly in the herd
T
The epizootic TGEV spreads rapidly
T
The epizootic TGEV can cause disease mainly in winter
T
The epizootic TGEV can be transmitted with milk
T
The epizootic TGEV does not cause viraemia
F
Transmissible gastroenteritis virus provides cross protection to hemagglutinating coronavirus
F
TGE mainly cause croupous pneumonia
F
TGE replaces the respiratory corona virus
F
TGE appears in Hungary
T
TGE causes 100% mortality in susceptible piglets under 1 week of age
T
Porcine transmissible gastroenteritis is completely eradicated in Europe
F
PED is similar to TGE
T
The incubation time of TGE is usually 1-3 days
T
TGE virus infects the digestive and the respiratory system
T
Only pigs are susceptible to TGE infection
F
Maternal immunity is essential against TGE infection of piglets
T
Today TGE occurs in epizootic form
T—in winter
TGE is completely eradicated in Europe
F
Transmissible gastroenteritis is usually asymptomatic in adults
T
Transmissible gastroenteritis virus can cause clinical signs in dogs
F
The Porcine respiratory coronavirus has been evolved from the Transmissible gastroenteritis virus
T
Porcine respiratory coronavirus induces cross-protection from transmissible gastroenteritis
T
TGE infection is devastating at any age
F
The incubation period of TGE can be as short as 8 hours
F
Pig has betacoronavirus
T
Pigs has only alphacoronavirus
F
The porcine coronavirus may be avian virus
T
The antibodies against porcine respiratory coronavirus protect the pigs against porcine epidemic diarrhoea virus
F
Mutations and recombinations do not occur in swine coronaviruses
F
PRCoV usually causes pneumonia
F
Porcine respiratory coronavirus reduced the prevalence of porcine epidemic diarrhoea
F
Porcine respiratory coronavirus induces cross protection from TGE
T
Swine pulmonary corona virus has a high mortality by pneumonia
F
Porcine respiratory coronavirus is a modification of the Hemagglutinating encephalomyelitis virus
F
PRCoV gives cross protection against TGEV
T
PDCoV causes symptoms in pigs
T
Porcine respiratory coronavirus causes acute pneumonia in susceptible piglets
F
Porcine epidemic diarrhea can cause clinical signs in older animals
T
The virus causing porcine epidemic diarrhea can replicate in the colon
T
PEDV also occurs in Europe
T
The porcine epidemic diarrhoea virus causes disease in calf
F
Porcine epidemic diarrhoea virus can cause disease in humans
F
The virus causing porcine epidemic diarrhoea can replicate in the heart muscle of the foetus
F
Porcine epidemic diarrhoea virus causes more severe symptoms in adult than in young piglets
F
Porcine epidemic diarrhoea is present only in Africa and in the Middle East
F
Porcine epidemic diarrhoea usually resembles TGE
T
Porcine epidemic diarrhoea can be transmitted by infected dogs and cats
F
Porcine epidemic diarrhoea frequently occurs in Europe
F
PHEV gets to central nervous system via the peripheral nerves
T
PHEV causes diarrhoea
F
Hemagglutination encephalomyelitis virus infects young pigs
T
Hemagglutinating encephalomyelitis virus is typically vectored by mosquitoes
F
Hemagglutinating coronavirus can cause encephalomyelitis in suckling piglets
T
Hemagglutinating coronavirus can cause severe diarrhoea in sows
F
Hemagglutinating coronavirus/Ontario Disease is sporadic in Hungary
T
Hemagglutinating coronavirus of pigs is frequently causing malabsorption in sows
F
The hemagglutinating encephalomyelitis virus multiplicate in hematopoietic stem cells of the bone marrow
F
Hemagglutinating coronavirus is present worldwide
T
The occurrence of coronavirus encephalomyelitis of piglets is usually sporadic
T
Deltacoronavirus of pigs is a bat virus
F–bird
Deltacoronavirus of pigs is an avian virus
T
Bovine coronavirus is generally spreading in summer
F
The bovine coronavirus is of avian origin
F
Bovine coronavirus is betacoronavirus
T
Bovine coronavirus is alphacoronavirus
F
Bovine coronavirus does not cause haemagglutination in vitro
F
Bovine coronavirus remains at the place of the primary replication, and it does not cause viraemia
F
Bovine coronavirus is generally spreading in winter
T
Certain bovine coronaviruses can cause diarrhoea in children
F
Bovine coronaviruses usually infect the respiratory and the digestive systems
T
Bovine corona virus causes diarrhoea in adult animals mainly in summer
F
Bovine corona virus can cause respiratory problems
T
Cattle can be infected with coronavirus per os
T
Cattle can be infected with coronavirus by inhalation
T
Bovine coronavirus can infect humans
F
Bovine coronaviruses causes mainly respiratory and enteric diseases
T
Certain bovine coronaviruses can affect humans causing clinical signs
F
Calves can be protected against coronavirus diarrhoea by vaccinations of pregnant cows
T
Mortality of calf enteral coronavirus is high
T
Bovine coronaviruses can cause diarrhoea only in calves up to one month of age
F
Coronavirus diarrhoea occurs in young calves between a few days and 3-4 weeks of age
T
Coronavirus dysentery in calves can be observed up to 3 weeks of age
T
Coronavirus can cause enteritis in calves typically on the first week of life
T
Calf coronavirus diarrhoea is characterized by several respiratory signs
F
Mortality of calf respiratory coronavirus is high
F
Bovine coronaviruses may cause respiratory signs in calves
T
Winter diarrhoea mainly affects dairy herds
T
Bovine coronavirus can cause diarrhoea in adult animals
T
Coronaviruses cause winter diarrhoea in dairy cows with haemorrhagic access
T
There are no vaccines for the prevention of coronaviral diarrhoea in cattle
F
Winter dysentery causes symptoms in younger age (up to 6 months of age).
F
Coronaviruses cause winter diarrhoea in dairy cows
T
Surviving winter dysentery gives permanent protection only against homologous infection
T
Dogs have only one type of coronavirus
F
The canine coronavirus is a zoonotic agent
F
Canine coronavirus can always cause enteral disease
F
There is a vaccine against canine coronavirus
T
Canine coronavirus (CCOV-1) causes diarrhoea in young, susceptible dogs
T
Canine coronaviruses frequently cause encephalitis and hepatitis in puppies
F
Canine alphacoronavirus type II may cause haemorrhagic disease in 1-2-month-old pup
T
Canine coronavirus are only present in North America
F
Canine coronavirus vaccines effectively protect from any Canine coronavirus infection
F
CCoV-IIa infections are endemic worldwide
F
Canine enteral coronavirus and porcine coronavirus are genetically closely relative
F
Dog enteral coronavirus: some strains can cause haemorrhagic diseases in some visceral organs
T
Canine coronavirus-2 infections are characterized by haemorrhagic diarrhoea in puppies
T
There are no protective vaccines available against Canine enteric coronavirus
F
Canine pantropic coronavirus is an agent of kennel cough
F
Canine pantropic coronavirus causes subnormal temperature
F
Canine pantropic coronaviruses damage only the mucous membranes
F
Canine pantropic coronaviruses causes high fever
T
Pantropic canine coronavirus infections are endemic worldwide
F
Pantropic canine coronavirus causes a mild respiratory disease in suckling dogs
F
The canine respiratory coronavirus belongs to a different group than enteral coronavirus
T
Canine respiratory coronavirus and human coronaviruses are genetically very distant relatives in all cases
F
Canine respiratory coronavirus and bovine coronaviruses are genetically closely relatives
T
Canine respiratory coronavirus infection results cross-protection against CCOV-I
F
In suckling dogs CCoV-II infection causes respiratory disease.
F
Canine coronavirus is part of kennel cough
T
The FIP is a pathotype of feline coronavirus
T
Almost all cat vaccines contain antibodies against FIP
F
The wet form of FIP is II. type of hypersensitivity
F
The dry form of FIP is IV. type of hypersensitivity
T
FIP is an incurable disease
T
FIP is caused by jackal coronavirus
F
FIP responds well to antibiotic treatment
F
Most animals infected with feline coronavirus develop FIP
F
Cats can be vaccinated against feline coronavirus, but protection against FIP is not effective
T
The dry form of FIP is I. type of hypersensitivity
F
The feline coronavirus causes viraemia only in FIP
F
The feline coronavirus is usually an enteric disease
T
The feline coronavirus is a zoonotic agent
F
Feline enteric coronaviruses may infect dogs
F
Feline infectious peritonitis viruses form a single serotype
T
Feline enteric coronavirus infection usually causes sudden death of queens
F
In the background of FIP can be immunopathological processes
T
FIP causes infection only in cats younger than 1 year of age
F
Feline corona virus does not have a long infection/carrier time
F
Feline infectious peritonitis (FIP) develops only in adult cats (over 1 year of age).
F
Decreased serum albumin/globulin ratio may indicate FIP
T
Feline enteric coronavirus usually causes severe, haemorrhagic enteritis in kittens
F
Cell-mediated hypersensitivity plays a major role in the background of non-effusive feline infectious peritonitis
T
All species of Felidae are susceptible to feline coronaviruses
T
Coronaviruses can cause asymptomatic infection in cats
T
Feline coronaviruses can cause mild watery diarrhoea
T
Feline infectious peritonitis is an acute disease, it appears after a 2-3 days long incubation
F
Feline coronavirus is a recombinant canine virus
T
Feline enteric coronavirus causes FIP in 5-10% of cases
T
FIP mainly infects with faeces
T
Feline enteric coronavirus (FECoV) can only infect Felidae
T
Effusive FIP is the result of a type 3 hypersensitivity reaction
T
Feline enteric coronavirus infection of cats is very common
T
Vaccine effectively protects from feline infectious peritonitis
F
Feline coronavirus has two serotypes, both having two pathotypes
T
FECoV infection usually causes acute haemorrhagic enteritis
F
The Feline enteric coronavirus usually does not cause severe enteritis
T
FIP forms because of immunotolerance
F
In the presence of high-titer antibody level, infectious peritonitis cannot develop in cats
F
Inactivated vaccine against IBV can be used any ages.
F
Avian coronaviruses provide long lasting yolk-immunity
F
A clinical sign of IBV can be nephritis
T
IBV has nephropathogenic strains
T
Infectious bronchitis virus causes tracheitis and pneumonia in chicken below 6 weeks of age
T
The eggs are not infected infectious bronchitis virus
T
IBV, the most important route is the germinative route
F
IBV, have a wide range of serotypes including many variant strains
T
IBV, cause stunting growth when embryonated egg is infected
F
IBV is an arterivirus.
F
Mortality of IBV is high every ages
F
Mortality of IBV depends on the coinfections
T
IBV causes swollen oviducts in chicken
T
Mortality of IBV depends on the age
T
IBV can cause soft-shelled egg
T
IBV cannot cause viraemia
F
The Infectious Bursitis Virus IBDV is inactivated within 1-2 days in the environment
F
Infectious bronchitis viruses belong into 3 distinct serotypes
F
Infectious bronchitis virus damages the ovaries only in hens
F
Infectious bronchitis virus can cause renal problems
T
Infectious bronchitis virus can cause inflammatory lesions in the oviduct of chicken
T
Infections bronchitis virus vaccines are used against turkey enteritis
F
Infectious bronchitis virus can cause severe respiratory signs in young chicken
T
Infectious bronchitis virus can damage the oviduct
T
Infectious bronchitis can spread very slowly in the flock causing chronic disease
F
There are no vaccines for the prevention of infectious bronchitis of chicken
F
Infectious bronchitis virus of chicken is a uniform virus without any types of variants
F
There is no germinative infection in the case of infectious bronchitis of chicken
T
Infectious bronchitis virus replicates in the epithelial cells of the trachea and bronchi
T
Infectious bronchitis virus can result in damaged or abnormal shell formation
T
Infectious bronchitis has a lot of serotypes
T
Infectious bronchitis viruses may have different organ tropism
T
Germinative route is the most important in the transmission of infectious bronchitis
F
Inactivated vaccines can be used against infectious bronchitis
T
Attenuated vaccines can be used against infectious bronchitis
T
Infectious bronchitis viruses form 2 distinct serotypes
F
Infectious bronchitis viruses have a wide range of serotypes including many variants
T
The clinical signs of Infectious bronchitis and Newcastle disease may be similar
T
Coronavirus can cause diarrhoea in turkeys
T
Turkey corona virus does not cause strong diarrhoea and causes no necrosis
F
Turkey enteritis is characterized by age-dependent mortality rates
T
Vaccination of turkey breeding flocks against Turkey enteritis virus is mandatory
F
