Midterm 3 Flashcards
Influenza viruses are sensitive to detergents
True
Certain antiviral drugs can inhibit the influenza A virus neuraminidase activity
True
At least 16 different serotypes of Influenza A haemagglutinin are known so far
True
The AG structure of influenza viruses is very stable
False
Racing horses must be yearly vaccinated against equine influenza
True
In dogs mainly H3N8 strains cause influenza
True
Waterfowl are more sensitive to avian influenza than chicken and turkey
False
Highly pathogenic avian influenza strains may cause encephalitis in birds
True
The PPR is endemic in North and south america
False
The canine distemper virus can infect only dogs
False
The outcome of canine distemper virus infection is very much determined by the immune response of the dog
True
In utero canine distemper virus may result in abortion
True
The virulence of ND strains can be determined by sequence analysis of virus genes
True
ND virus cannot survive long in the environment
False
ND is typically vectored by ticks
False
Only inactivated vaccines can be used against ND virus
False
Parainfluenza 2 virus is frequent in the etiology of kennel cough
True
The natural hosts of hendravirus are flying foxes
True
Hendravirus can cause encephalitis in horses and humans
True
Avian metapneumovirus can cause respiratory signs and egg production problems
True
Porcine respiratory coronavirus infection usually provides cross-protection from transmissible gastroenteritis virus infections
True
Transmissible gastroenteritis virus can infect only swine
False
Bovine coronavirus may cause respiratory signs in calves
True
Canine alphacoronavirus type 2 may cause hemorrhagic disease in 1-2 month old pups
True
Feline enteric coronavirus usually causes severe, hemorrhagic enteritis in kittens
False
Cell-mediated hypersensitivity plays a major role in the background on non-effusive feline infectious peritonitis
True
Infectious bronchitis virus can cause inflammatory lesions in the oviduct of chicken
True
Infectious bronchitis virus vaccines are used against turkey enteritis
False
Pregnant mares usually abort in the acute phase of viral arteritis
True
Equine viral arteritis is diagnosed by agarose-gel immunodiffusion (coggins)
False
Porcine reproductive and respiratory virus (PRRSV) propagates in lymphatic cells
True
PRRSV infection may influence the reproductive performance of boars
True
In the case of vesicular stomatitis vesicles are formed only at the place of entry of the virus
True
Salivation is a CX of vesicular stomatitis
True
Vesicular stomatitis cannot be prevented with vaccines
False
Vesicular stomatitis is a zoonosis
True
The rabies virus is a uniform virus without serotypes, genotypes, subtypes
False
Only carnivorous animals are susceptible to the rabies virus
false
High amount of rabies virus is shed in the saliva
True
Sylvatic rabies is maintained by foxes in europe
True
Bovine enzootic leukosis virus can be transmitted with lymphoid cells
True
Iatrogenic infection is frequent in the epidemiology of bovine enzootic leukosis
True
The target cells of the bovine enzootic leukosis virus are T lymphocytes
False
The typical signs of bovine enzootic leukosis can be seen in cattle under 1 year
false
All avian leukosis viruses are oncogenic
True
Avian leukosis viruses are shed in the feces
True
There is no germinative infection in the case of avian leukosis virus
False
The target cells of the avian leukosis are B lymphocytes
True
Borna disease is widespread all over the world
True
Only horses are susceptible to borna disease virus
False
Pneumonia is the main CS of borna disease
False
Most animals showing CS of borna disease die due to it
True
Infective prions are resistant to proteases
True
Only a few animals show CS of BSE in an infected herd
True
BSE prions are shed in the feces and it is transmitted to other cattle in the herd
false
The incubation time of BSE is 3-5 years
True
Anthrax cannot occur in dogs and cats
False
Bacillus anthracis generally infects animals per os
True
Anthrax is an acute or peracute disease in cattle
True
Anthrax cannot be prevented with vaccination
False
Blackleg is caused by clostridium septicums
False
In the case of sheep, blackleg is generally a consequence of wound infection
True
Edema in the muscles is a typical CS of blackleg
True
Attenuated vaccines are used for the prevention of blackleg
False
Tetanus occurs only in horses
False
The tetanus toxin cleaves the synaptobrevin
True
The CS of tetanus are inducible
True
Tetanus cannot be prevented with vaccine
False
Extracellular enzymes are important factors of pathogenic staphylococci
True
Morels disease is mainly seen in suckling lambs
false
Diarrhea is the mian CS of morels disease
false
Isolation of the agent from lesions of morels disease confirms the diagnosis
true
Listeriosis can only be seen in sheep
false
Abortion is the most frequent form of listeriosis in sheep
false?
Aerogenic infection is the most important form of infection with listeria in sheep
false
Listeriosis is spreading fast from one animal to the other
false
Caseous lymphadenitis is caused by nitrate positive strains of corynebacterium pseudotuberculosis
T, positive strains in horse, negative in ruminant
Caseous lymphadenitis is only seen in suckling lambs
F
Arthritis can be a CS of caseous lymphadenitis
t
Vaccination can be used for the prevention of caseous lymphadenitis
t
The natural hosts of influenza A virus are humans
f
Certain antiviral drugs can inhibit the M2 ion channels of the influenza A virus
t
the amino acid sequence of the protease cleavage site of the influenza A virus haemagglutinin may influence the virulence
t
At least 9 different serotypes of influenza A virus neuraminidase are know so far
t
In horses predominantly H3N8 influenza A strains can cause disease
t
It is forbidden to use AB for TX of influenza in horses
f
Swine-adapted influenza A viruses cannot cause disease in humans
f
The vaccination of poultry against avian influenza is mandatory
f
Bovine parainfluenza virus 3 is frequent endemic in cattle farms
t
It is mandatory to vaccinate cattle against rinderpest
f
Erosive lesions in the oral cavity are frequent signs of PPR
t
Nowadays rinderpest virus is used as heterologous vaccine against PPR virus
f
Dogs infected with distemper virus usually become life-long carriers and shedders
f
Clinical manifestation of distemper is mainly seen in 3-4 months of age
t
Canine parainfluenzavirus 2 frequently causes encephalitis in old dogs
f
Feline morbillivirus infection may be associated with tubule-interstitial nephritis in cats
t
Wild birds may be reservoir hosts of influenza viruses
t
Wild birds may be reservoir hosts of newcastle disease virus
t
Wild birds may be reservoir hosts of avian metapneumovirus
t
Wild birds may be reservoir hosts of nipah viruses
f
TGE is more severe in piglets than adults
t
PRCoV is a modification of the haemagglutinating encephalomyelitis virus
f
Porcine epidemic diarrhea is present only in africa and the middle east
f
Haemagglutinating encephalomyelitis virus is typically vectored by mosquitoes
f
Bovine Co viruses can cause diarrhea only in calves up to one month of age
f
Canine Co viruses frequently cause encephalitis and hepatitis in puppies
f
FIP develops only in adult cats
f
Decreased serum Alb/Glb ratio may indicate FIP
t
Mares are frequently lifelong carriers of equine arteritis virus
f
SC edema is a freq CS of EVA
t
PRRSV can cause abortion only in the advanced stage of pregnancy
f
Only inactivated vaccine can be used for the prevention against PRRSV
f
Rhabdovirus are very resistant and they can survive in the environment for several weeks
f
VS occurs in america
t
The host range of VS and FMD is the same
t
Sand flies and midges can transmit VS virus
t
Urban forms of rabies is maintained by dogs and cats
t
Rabies virus is spreading in the infected animals perineural
t
Rabies virus is shed in the saliva before SX appear
t
The incubation of rabies is generally less than 1 week,
f
Retroviruses show high host specificity
t
Retrovirus are generally not carried for more than a month
f
Malignant transformation is a frequent consequence of retrovirus infection
t
Retroviruses generally cannot survive in the environment for a long time
t
infection of poultry herds with avian leukosis is widespread
t
Cs of avian leukosis generally appear in day old chicken
f
Lymphoid leukosis is the most frequent form of avian leukosis
t
The main way of prevention of avian leukosis is vaccination using attenuated strains
f
EIA is a vector borne disease
t
EIA virus causes persistent infection
t
There is no immune reaction in the case of EIA
f
EIA is zoonotic
f
Scrapie occurs only in britain and ireland
f
There is genetic predisposition in the case of scrapie
t
Scrapie prion is shed by the infected animals in different discharges
t
Itching is a freq CX of scrapie
t
Anthrax cannot be seen in europe anymore
f
Capsule is a virulent factor of anthrax
t
CO2 is needed for the spore formation of the agent of anthrax
f
Pigs are more susceptible to anthrax than sheep
f
Cl. chauvoei is the agent of malignant edema
f
Malignant edema is generally a consequence of a wound infection
t
Frozen food is a predisposing factor of bradsot
t
CSF is a predisposing factor of koves disease
t
Lamb dysentery can be seen in lambs around weaning
f
Lesions of lamb dysentery can be seen in the small intestine
t
Isolation of Cl.perfringens from the gut confirms the Dx of lamb dysentery.
f
Lambs have to be vaccinated with attenuated vaccine in order to prevent lamb dysentery
f
Staph in rabbits typically occurs in newborn rabbits
f
Aerogenic infection is common in the case of staph in rabbits
t
Arthritis can be a CS of staph infection in rabbits
t
Abscess formation can be a CS of staph in rabbits
t
Neuraminidase is a virulence factor of erysipelothrix rhusiopathiae
t
erysipelothrix rhusiopathiae can be carried and shed by asymptomatic pigs
t
Only pigs can be infected with erysipelothrix rhusiopathiae
f
Purulent pneumonia is a typical form of acute erysipelas
f
Ulcerative lymphangitis of horses is caused by nitrate (-) strains of corynebacterium pseudotuberculosis
F (postivie in horse, negative in others
Ulcerative lymphangitis of horses can be a consequence of umbilical infection
t
Abscess formation can be seen in the case of ulcerative lymphangitis of horses
t
Ulcerative lymphangitis of horses is typically an acute disease
f
Influenza viruses infect predominantly lymphatic cells
f
Influenza viruses are sensitive to lipid solvents
t
Influenza viruses are transmitted exclusively via nasal discharges
f
Genetic segment reassortments are responsible for the antigenic drift in seasonal influenza endemics
t
Influenza viruses do not cause viraemia in horses
f
In case of a swine influenza outbreak, all sick and in-contact animal must be destroyed
f
Cats and dogs are resistant to H5N1 influenza A virus
f
Birds may shed influenza viruses via their faeces
t
Paramyxoviruses cannot be isolated in cell cultures
f
Parainfluenza 3 virus in cattle frequently causes oral mucosal erosions and oedema
True (maybe, says IBR is differential which has erosions)
The Rinderpest virus is vectored by ticks
false
The Peste des petit ruminants virus is a zoonotic agent
f
Canine distemper virus frequently infects via the airborne route
t
Liver dystrophy and hepatitis are the most characteristic lesions of canine distemper
f
Due to the inhibitory effect of maternal antibodies, dogs should not be vaccinated against canine distemper under 6 months of age
f
Canine parainfluenza virus 2 is typically transmitted by vertical route
t
Lentogenic Newcastle disease virus strains can infect only chicken but not wild birds
f
Lentogenic Newcastle disease virus strains can increase their virulence through mutations
false i think
Because Newcastle disease is a notifiable disease, preventive vaccination of birds is not allowed
f
Hendra virus can cause haemorrhagic nephritis in humans and in dogs
f
Egg production problems may be signs of avian influenza
false i think
Egg production problems may be signs of Newcastle disease
t
Egg production problems may be signs of metapneumovirus infections
t
Egg production problems may be signs of infectious bronchitis
t
Haemagglutinating encephalomyelitis cannot be differentiated from Teschen disease in sows
false i think
In cattle coronavirus may cause respiratory or enteric disease
t
Approximately 90% of Feline enteric coronavirus infected cats will subsequently develop peritonitis
f
The Feline infectious peritonitis virus and the Canine respiratory coronavirus are antigenically closely related to each other
false i think
Geldings are asymptomatic, long-term carriers of the Equine arteritis virus
f
Equine arteritis is diagnosed by agarose gel immunodiffusion test (Coggins test)
f
The porcine reproductive and respiratory syndrome virus (PRRSV) is present world-wide
t
The PRRSV can cause abortion only in gilts during their first pregnancy
f
Vesicular stomatitis virus has several serotypes
t
Vesicular stomatitis can occur in horses, cattle and swine
t
Vesicular stomatitis virus cannot induce good immunity
f
Most animals die in vesicular stomatitis
f
Paralysis is typical clinical sign of rabies
t
Generally furious rabies can be seen in cats
t
Interstitial pneumonia is generally seen in post mortem in the case of rabies
f
Attenuated rabies vaccines are used for the per os vaccination of foxes
t
