Midterm 2 (2019) Flashcards
The African Swine Fever Virus can be inactivated by irradiation
True
The ASF causes haemadsorption in cell cultures
True
The ASF infects the swine per os
True
The ASF replicates in lymphocytes
False
In ASF cases, abortion is never observed
False
In acute ASF cases, the leading pathological finding are the haemorrhages
True
Vaccines are available to be used in the control of ASF
False
ASF is shed in the saliva of the infected animals
True
The FMD virus is very sensitive to the environmental conditions
False
The FMD virus can retain its infectivity in dried milk for months
True
All serotypes of FMD can be detected world-wide
False
Swine shed FMD virus for a shorter time comparing to cattle
True
Hedgehog is susceptible to FMD
True
The primary replication site for FMD is the tongue mucosa
False
After immune response, the FMD vesicles can recover fully
True
For laboratory tests, FMD samples should be submitted in buffered transport medium
True
Talfan Disease is a disease of pigs
True
The clinical signs of Talfan Disease are more severe than that of Teschen Disease
False
Talfan Disease can be seen in animals below 4 months of age
True
Flaccid paralysis is a typical clinical sign of Talfan Disease
True
Pigs are infected with Swine Vesicular Disease Virus per os
True
Swine Vesicular Disease Virus can cause vesicles on the snout of pigs
True
Haemorrhages can be seen post mortem in the case of Swine Vesicular Disease
False
The mortality of Swine Vesicular Disease is very high, it can be 50-60%
False
Duck Hepatitis A virus is shed in the faeces
True
The resistance of Duck Hepatitis A is high
True
Germinative infection can happen in the case of Duck Hepatitis A
False
Clinical signs of the Duck Hepatitis A can be seen in all age groups
False
The primary source of VES infection is sea-origin feed
True
Feline Calicivirus infection can cause the limping of kittens
True
RHD virus can be propagated in cell culture
False
The Orthohepevirus A causes clinical symptoms only in human
True
The Bursitis Virus is very sensitive to the environmental conditions
False
The Bursitis Virus causes per os infection
True
Clinical signs of Gumboro Disease can be seen in chickens older than 8 weeks
False
Bursitis Virus infection results in immunosuppression
True
Togavirus are transmitted by mosquitoes
True
Birds serve as reservoirs for Venezuelan Horse Encephalomyelitis Virus
False
Equine Encephalomyelitis Viruses can cause asymptomatic infections
True
Equine Encephalomyelitis Viruses are zoonotic
True
Reoviruses are sensitive to lipid solvents and detergents
False
Orbiviruses are mainly arboviruses
True
Bluetongue virus infects also horses and dogs
False
Bluetongue virus is also foetopathic
True
Vaccination against Bluetongue results serotype specific immunity
True
Bluetongue outbreaks mainly occur is summer and autumn
True
African Horse Sickness is zoonotic
False
Zebras are not susceptible to African Horse Sickness
False
Horse Encephalosis is endemic in Africa
True
Rotavirus infects only mammals
False
Rotaviruses are typically transmitted via the faecal-oral route
True
Avian Orthoreoviruses can cause inapparent infection in poultry
True
The Louping ill Disease is seen in cattle in Great Britain and Scandinavia
False
Serological cross reactions frequently occur between related Flavivirus
True
The Tick-borne Encephalitis Virus can be transmitted via consumption of raw milk
True
Pestivirus are zoonotic
False
In utero infection with non-cytopathic BVDV can cause immunotolerance
True
Mucosal Disease can develop in cattle persistently infected with BVDV
True
Bovine Neonatal Pancytopenia (BNP) is an immunopathy observed in immunotolerant, BVDV-infected calves
False
The Border Disease Virus causes pneumonia in sheep
True
Classical Swine Fever can retain its infectivity for 6 months in frozen meat
True
CSF causes oronasal infection
True
CSF infection results in immunosuppression
True
In acute CSF, skin haemorrhages and bloody nasal discharge can be observed
True
CSF infection during the first half of pregnancy results in the birth of immunotolerant piglets
True
During necropsy enlarged bloody lymph nodes can be seen in CSF cases
True
The boutons in the intestines are characteristic lesions in subacute CSF
True
In vaccinated herds we mostly see the CSF clinical signs in 6-12 weeks old piglets
True
All Bunyviruses are vectored by insects
False
Akabane virus causes foetal damages in dogs
False
Hantaviruses cause renal failure in human
True
Nairobi Sheep Disease causes haemorrhagic enteritis in the infected animals
True
Influenza viruses are classified into genera by their HA and NA proteins
False
The M2 protein of Influenza Viruses serves as an ion channel important in the decapsidation
True
The high virulence of some Influenza A viruses is the result of mutations in the HA gene
True
The NA protein has a role in the Influenza Virus release from the infected cells
True
Antigenic drift means serials of point mutations in the HA and NA genes
True
In birds, all influenza variants can be detected
True
The mortality of swine influenza is high
False
In poultry farms, LPAI maybe be endemic without clinical signs
True
The African Swine Fever Virus can be inactivated by 2%NaOh within 1 day
True
The immune system cannot neutralise the ASF virus by antibodies
True
The ASF virus infects the swine by air
False
The ASF virus replicates the bone marrow
True
Several virulence variants of ASF virus exist
True
In acute ASF cases, the leading pathological finding is the black and enlarged lymph nodes
True
Stamping out of the infected herds is applied in the control of ASF
True
ASF virus is shed in the urine of the infected animals
False
The FMD virus is very sensitive to acidic pH
True
The FMD virus can retain its infectivity in frozen milk for months
True
FMD virus is serologically uniform
False
Cattle shed FMD virus for a shorter time comparing to swine
False
Dogs are susceptible to FMD
True
The primary replication site of FMD is the bone marrow
False
FMD can be carried for long time in the hoof tissue
True
For laboratory tests FMD samples should be submitted frozen
False
Talfan Disease occurs in any age group
False
Haemorrhages are typical post mortem lesions of Talfan Disease
False
Paralysis is a clinical sign of Talfan Disease
True
There is widespread vaccination in Europe for prevention of Talfan Disease
False
There is germinative spread in the case of Avian Encephalomyelitis
True
Typical clinical signs of Avian Encephalomyelitis occur up to 5-6 weeks of age
True
Tremor is a typical clinical sign of Avian Encephalomyelitis
True
Haemorrhages are frequent post mortem lesions of Avian Encephalomyelitis
False
Avian Nephritis is more frequent in waterfowl than in chicken
False
Avian Nephritis is caused by astrovirus
True
Clinical signs of Avian Nephritis can be seen in the first four weeks of life
True
Ureate deposition is a post mortem of Avian Nephritis
True
VES causes mortality in piglets
True
Feline Calicivirus can cause persisting infection in the tonsils
True
RHD virus propagates in the liver of the infected animals
True
The Orthohepevirus A can be zoonotic
True
Both serotypes of Bursitis Virus are pathogenic
False
The Bursitis Virus mostly causes germinative infection
False
Clinical signs of Gumboro disease can be seen in chickens younger than 8 days
False
Bursitis Virus infection can reduce the efficacy of vaccinations
True
Togaviruses cause airborne infection
False
Rodents serve as reservoirs for Venezuelan Horse Encephalomyelitis Virus
False
Equine Encephalomyelitis Viruses can cause lameness in horses
True
Equine Encephalomyelitis can cause abortion in human
False
The Bluetongue virus is vectored by midges/gnats
True
Bluetongue occurs only in Africa and Australia
False
Goats are more resistant to the Bluetongue than sheep
True
In Europe vaccination of small ruminants against Bluetongue is mandatory
False
The Infectious Equine Arteritis and the African Horse Sickness may have similar clinical signs
True
African Horse Sickness is spread by ticks
False
Acute form of African Horse Sickness occurs mainly is zebra and horse
False
Subcutaneous oedema is a frequent symptom of subacute African Horse Sickness
True
Rotavirus are shed in the faeces in high titres
True
Rotavirus predispose to E. coli infection in sucking piglets
True
Orthoreovirus can cause tenosynovitis in pigs
False
Mammalian Orthoreoviruses can cause pneumoenteritis only in sucking animals
False
The main vectors of the Tick-borne Encephalitis Virus are sylvatic mammalian species
False
The Louping ill was introduced to Australia to control rabbit population
False
Cytopathic and non-cytopathic biotypes of the Bovine Viral Diarrhoea are known
True
The BVD virus typically damages endothelial-, epithelial- and lymphatic tissues
True
Bovine Neonatal Pancytopenia (BNP) is caused by a Bovine Viral Diarrhoea virus
False
Persistently infected cattle can maintain BVDC in a farm
True
Bloody diarrhea is a clinical sign of the Mucosal Disease
True
The Border Disease Virus frequently causes encephalitis in ewes
False
Classical Swine Fever Virus can be transmitted by raw pork products
True
CSF can cause transplacental infections
True
CSF infections result in thrombocytopenia
True
In acute CSF, at the beginning there is obstipation
True
CSF infection during the first of half of pregnancy can lead to abortion
True
During necropsy of acute CSF cases, haemorrhages can be seen in gastric mucosa
True
In uncomplicated cases of subacute CSF the normal size spleen can be observed
True
Wild boars play the main role in the maintenance of CSF virus in endemic areas
True
All Bunyaviruses are vectored by ticks
False
Akabane Virus is zoonotic
False
Hantaviruses causes haemorrhagic fever in humans
True
Nairobi Sheep Disease leads to abortion in the infected pregnant animals
True
The serotype of influenza viruses is determined by their HA and NA proteins
True
Influenzaviruses are sensitive to drying out
True
The virulence of Avian Influenza is determined by the i.v pathogeny index and mortality
True
The LPAI causes immunosuppression
True
Antigenic shift means the reassortment of the influenzavirus’ genome segments
True
In swine, all influenza variants can be detected
False
Influenza causes persistent infection in horses
False
In humans, inactivated vaccines are used for the immunisation against influenza
True
