Midterm 3 (3) Flashcards by Henriette Wisnes

The hemagglutinin (H) gene of influenza viruses is highly conserved, doesn’t mutate

False

How well did you know this?

Not at all

Perfectly

The neuraminidase (N) gene of influenza viruses is highly conserved, doesn’t mutate

False

How well did you know this?

Not at all

Perfectly

The nucleocapsid gene of influenza viruses is highly conserved, doesn’t mutate

True

How well did you know this?

Not at all

Perfectly

The RNA-dependent RNA-polymerase gene of influenza viruses is highly conserved, doesn’t mutate

True

How well did you know this?

Not at all

Perfectly

Antigenic drift is the consequence of serial point mutations

True

How well did you know this?

Not at all

Perfectly

Antigenic shift is the consequence of serial point mutations

False

How well did you know this?

Not at all

Perfectly

The complete genome of influenza viruses consists of 8 genome segments

True

How well did you know this?

Not at all

Perfectly

The main hosts of influenza viruses are (water) birds

True

How well did you know this?

Not at all

Perfectly

Peste des petites ruminants virus can cause hemorrhagic or necrotic enteritis

True

How well did you know this?

Not at all

Perfectly

Distemper virus can infect species belonging to the Felidae

True

How well did you know this?

Not at all

Perfectly

Distemper virus spreads mainly by arthropod vectors

False

How well did you know this?

Not at all

Perfectly

Distemper is a notifiable disease

False

How well did you know this?

Not at all

Perfectly

Lentogenic strains of Newcastle disease virus can cause high morbidity and mortality

Fasle

How well did you know this?

Not at all

Perfectly

Velogenie viscerotrop strains of Newcastle disease virus can be used for vaccine production

False

How well did you know this?

Not at all

Perfectly

Parainfluenza-3 virus of cattle can cause thromboembolic meningoencephalitis

False

How well did you know this?

Not at all

Perfectly

Parainfluenza-3 virus infection of calves is frequently followed by secondary bacterial infection

True

How well did you know this?

Not at all

Perfectly

TGEV can cause haemagglutination

False

How well did you know this?

Not at all

Perfectly

FIPV can cause haemagglutination

False

How well did you know this?

Not at all

Perfectly

HeCoV can cause haemagglutination

True

How well did you know this?

Not at all

Perfectly

PEDV can cause haemagglutination

False

How well did you know this?

Not at all

Perfectly

The epizootic TGEV spreads rapidly

True

How well did you know this?

Not at all

Perfectly

The epizootic TGEV can cause disease mainly in winter

True

How well did you know this?

Not at all

Perfectly

The epizootic TGEV can be transmitted with milk

True

How well did you know this?

Not at all

Perfectly

The epizootic TGEV does not cause viraemia

False

How well did you know this?

Not at all

Perfectly

Equine viral arteritis virus can infect through nasal route

True

Equine viral arteritis virus can infect per os

True

Equine viral arteritis virus can infect through venereal way

True

Equine viral arteritis virus can infect only by arthropods

False

The resistance of Rhabdoviruses is good

False

Rhabdoviruses are good antigens

True

The host range of the vesicular stomatitis virus is wide

True

The mortality of vesicular stomatitis is high

False

Rabies virus causes viraemia soon after infection

False

Rabies virus is shed in the saliva only after appearance of the clinical signs

False

Change of the behavior is an important clinical sign of rabies

True

Paralysis is an important clinical sign of rabies

True

Retroviruses are enveloped viruses

True

The host range of retroviruses is generally narrow

True

Reverse transcriptase converts RNA of retroviruses into DNA

True

Retroviruses are generally very stable viruses, mutations are exceptional in them

False

Enzootic bovine leukosis virus is shed in lymphoid cells

True

Enzootic bovine leukosis virus cannot cause intrauterine infection

False

Enzootic bovine leukosis virus is spreading slowly in the herd

True

The target cells of enzootic bovine leukosis virus are the B lymphocytes

True

Reticuloendotheliosis virus is shed in the faces

True

Reticuloendotheliosis virus can cause germinative infection

True

Stunted growth is a clinical sign of reticuloendotheliosis

True

Reticuloendotheliosis is prevented by vaccination of the parent animals

False

Normal prions are essential components of the cell membrane of the hosts

False

BSE is not spreading from animal to animal

True

In the case of BSE polioencephalitis is the main post mortem lesion

False

BSE prion is mainly detected with PCR

False

Only capsulated strains of Bacillus anthracis can cause anthrax

True

Edema factor and lethal factor are important virulence factors of Bacillus anthracis

True

The clinical signs of anthrax in pigs are more severe than in cattle

False

Dogs and cats are resistant against the agent of anthrax

False

Blackleg is caused by Clostridium septicum

False

Blackleg occurs in cattle and sheep

True

If antibiotics are applied after appearance of the clinical signs of blackleg, treatment is generally successful

False

Attenuated vaccines are used for the prevention of blackleg

False

Clostridium perfringens C causes infectious necrotic enteritis of piglets

True

Infectious necrotic enteritis of piglets occurs in piglets after weaning

False

The lesions of infectious necrotic enteritis of piglets can be seen generally in the small intestine

True

Infectious necrotic enteritis of piglets can be prevented by vaccinating the pregnant sows

True

Tetanus is caused by Clostridium tetani

True

The agent of tetanus causes septicemia

False

Tetanus can be diagnosed on the basis of post mortem lesions

False

Anatoxin vaccines can be used for the prevention of tetanus

True

Omphalitis is a common clinical sign of avian staphylococcosis

True

Arthritis is a common clinical sign of avian staphylococcosis

True

Pneumonia is a common clinical form of avian staphylococcosi

False

Dermatitis is a common clinical sign of avian staphylococcosis

True

Swine erysipelas is caused by Erysipelothrix suis

False

The agent of swine erysipelas can be carried by asymptomatic pigs

True

Diamond skin disease is a clinical form of swine erysipelas

True

The agent of swine erysipelas can cause disease only in pigs

False

Ulcerative lymphangitis of horses is caused by Corynebacterium equi

False

Clinical signs of ulcerative lymphangitis can be mainly seen in suckling horses

False

Purulent inflammation of the lymphatic vessels is typical in the case of ulcerative lymphangitis

True

The agent of ulcerative lymphangitis can be detected by microscopic examination

True

Influenza is not spread by carrier animal

False

Important to eradicate swine influenza cases

True

Influenza can lead to secondary infections

True

The influenza virus has segmented genome

True

The influenza viruses can frequently cause severe disease in all kinds of animals

True

Swine influence has high mortality rate

False

Swine influenza has high morbidity rate

True

To prevent complications of swine influenza, antibiotics are used

True

Swine influenza is easily transmitted to people

True

Swine influenza viruses can cause human pandemics

True

Severe respiratory signs are characteristic to swine influenza

False

There are two strains of equine influenza virus

False

Equine influenza virus is a frequent disease

True

Subtype two of equine influenza virus is highly variable

True

Movement of horses predisposes them to equine influenza

True

Equine influenza can predispose to secondary bacterial infections

True

Using attenuated vaccines, equine influenza can be prevented

True

Avian influenza of high economic impact is caused by HPAI

True

HPAI strains are mutations of LPAI strains

True

HPAI strains belonging to certain hemagglutinin types

True

Avian influenza is spread by bronchial discharge

True

Bird flu is transmitted by snot/nasal discharge

True

Highly pathogenic avian influenza viruses only cause disease in ducks

False

HPAI infections are mainly transmitted by inhalation

True

HPAI viruses may cause serious losses in poultry

True

Chicken are infected with HPAI strains per os

True

Migrating birds can transmit avian influenza strains to long distances

True

LPAI strains can become HPAI strains as a result of mutation

True

Avian influenza is present worldwide

True

Avian influenza is only caused by the H5 and H7 strains

False

Avian influenza virus is primarily spread through bronchial discharge, by aerogenic route

True

Avian influenza can be seen only in young birds

False

Parainfluenza-3 viruses causes disease primarily in young calves

True

A common route of infection with parainfluenza-3 is through inhalation

True

Parainfluenza-3 virus can predispose cattle to pneumonia caused by bacteria

True

The main clinical sign of a parainfluenza-3 infection is diarrhea

False

Parainfluenza-3 virus aids in secondary bacterial contaminations

True

Rinderpest virus survives for years in nature

False

Only cattle are susceptible to Rinderpest infections

False

Rinderpest is carried by animals for a long time

False

Over 50% of the animals may die during a Peste des petits ruminants outbreak

True

Rinderpest commonly occurs in Africa and in Latin America

False

Rinderpest virus is carried by animals for several years

False

Cattle are infected with rinderpest virus mainly per os

False

Rinderpest virus can survive in the environment for several months

False

The world is free of Peste des petites ruminants

False

The dominant clinical sign of Canine distemper is diarrhea

False

Canine distemper virus only infects Canidae

False

Distemper occurs in lions and dolphins

True

Distemper can cause encephalitis in dogs

True

Surviving distemper does not result in protection

False

Distemper can predispose dogs to secondary bacterial infections

True

Vaccinations against distemper at half years of age

False

Distemper causes de-myelinization

True

Distemper through conjunctival smear can be diagnosed by immunofluorescence technique

True

Canine distemper virus often causes cytoplasmic inclusion bodies in the urinary bladder epithelial cells

True

Avian paramyxovirus belongs into 9 serogroups

True

Velogenic strains of Newcastle disease virus cause an acute septicaemia

False

Members of every APMV serogroup can cause Newcastle’s disease

False

Velogenic-viscerotropic NDV strains can cause disease with high mortality

True

It is possible to determine the virulence of AMPV-1 strains by sequencing

True

An acute, nervous form of Newcastle disease virus can frequently be seen in dogs

False

Newcastle disease is caused by virulent strains of serogroup APMV-1

True

The sequence of Newcastle disease virus F0 splice site, is a significant factor of it's virulence

True

An intracerebral pathogenicity index higher than 0.7 is a criterion of Newcastle disease

True

Newcastle disease virus cause dwarfism in embryonated chicken eggs

False

Vaccination against Newcastle disease is used all over the world

True

Mesogenic strains of Newcastle disease virus are used for vaccination in some countries

True

Lentogenic strains of Newcastle disease virus can cause disease in young turkey

True

Apathogenic strains of Newcastle disease virus are used for vaccination

True

Live mesogenic strains of Newcastle disease virus is used for vaccination in Europe

True

Day-old chickens can be vaccinated with apathogenic strains to prevent Newcastle disease virus

True

Wild boars may transmit Newcastle disease virus

False

Any member of the avian paramyxovirus serogroups may cause Newcastle disease

False

Avian paramyxovirus-1 usually causes central nervous disease in pigeons

True

Velogenic strain of Newcastle disease virus cause an acute form of the disease

True

Hen flocks are vaccinated with lentogen/apathogenic strains to induce maternal immunity

True

An acute, nervous form of Newcastle disease virus can frequently be seen in ducks

False

Newcastle disease virus can be taken up by inhalation and per os

True

CNS clinical signs are frequently seen in chicken in the case of Newcastle disease

True

Newcastle disease could easily be differentiated from avian influenza

False

Lentogenic strains of Newcastle disease virus do not cause clinical signs

False

Using vaccines of velogenic strains of Newcastle disease virus good protection can be reached

False

Hendra virus is found only in Australia

True

Nipah virus is transmitted mainly by arthropod vectors

False

Turkey rhinotracheitis virus causes disease in turkeys and chickens

True

Turkey rhinotracheitis is most frequent at 4-9 weeks of age

True

Coronaviruses can survive for months in the environment

False

Coronaviruses frequently mutate and recombine

True

Coronaviruses have a weak physical resistance

True

Porcine respiratory coronavirus causes acute pneumonia in susceptible piglets

False

Cattle can be infected with coronavirus per os

True

Cattle can be infected with coronavirus by inhalation

True

Coronavirus can cause enteritis in calves typically on the first week of life

True

Coronaviruses cause winter diarrhea in dairy cows

True

Bovine coronaviruses causes mainly respiratory and enteric diseases

True

Bovine coronavirus can infect humans

False

Bovine coronaviruses usually infect the respiratory and the digestive systems

True

Bovine coronavirus may induce both respiratory and enteric signs

True

Calf coronavirus diarrhea is characterized by several respiratory signs

False

Certain bovine coronaviruses can affect humans causing clinical signs

False

Coronaviruses mainly cause central nervous disease in cattle

False

Calves can be protected against coronavirus diarrhea by vaccinations of pregnant cows

True

Surviving winter dysentery gives permanent protection only against homologous infection

True

Transmissible gastroenteritis virus provides cross protection to hemagglutinating coronavirus

False

TGE mainly cause croupous pneumonia

False

TGE replaces the respiratory corona virus

False

TGE appears in Hungary

True

TGE causes 100% mortality in susceptible piglets under 1 week of age

True

Porcine transmissible gastroenteritis is completely eradicated in Europe

False

TGE causes 100% mortality in sows

False

PED is similar to TGE

True

Porcine respiratory coronavirus causes acute pneumonia in susceptible piglets

False

The incubation time of TGE is usually 1-3 days

True

TGE virus infects the digestive and the respiratory system

True

Today TGE occurs in an enzootic form

True

The characteristic symptoms of TGE are vomiting and diarrhea

True

Porcine epidemic diarrhea virus can cause disease in humans

False

The virus causing porcine epidemic diarrhea can replicate in the heart muscle of the foetus

False

TGEV is widespread and fully replaced porcine epidemic diarrhea (PED) virus

False

Porcine respiratory coronavirus induces cross protection against TGE

True

Only pigs are susceptible to TGE infection

False

Maternal immunity is essential against TGE infection of piglets

True

Today TGE occurs in epizootic form

False

TGEV is widespread

True

TGE is completely eradicated in Europe

False

TGE infection is devastating at any age

False

The incubation period of TGE can be as short as 8 hours

False

Transmissible gastroenteritis is usually asymptomatic in adults

True

Transmissible gastroenteritis virus can cause clinical signs in dogs

False

The Porcine respiratory coronavirus has been evolved from the Transmissible gastroenteritis virus

True

Porcine respiratory coronavirus induces cross-protection from transmissible gastroenteritis

True

Porcine epidemic diarrhea usually resembles TGE

True

Porcine epidemic diarrhea can be transmitted by infected dogs and cats

False

Porcine epidemic diarrhea frequently occurs in Europe

False

Porcine epidemic diarrhea can replicate in the colon

True

Porcine respiratory coronavirus induces cross-protection against PED

False

Porcine respiratory corona virus has reduced the prevalence of porcine epidemic diarrhoea

False

Hemagglutinating coronavirus can cause encephalomyelitis in suckling piglets

True

Hemagglutinating coronavirus can cause severe diarrhea in sows

False

Hemagglutinating coronavirus/Ontario Disease is sporadic in Hungary

True

Hemagglutinating coronavirus of pigs is frequently causing malabsorption in sows

False

The hemagglutinating encephalomyelitis virus multiplicate in hematopoietic stem cells of the bone marrow

False

Hemagglutinating coronavirus is present worldwide

True

The occurrence of coronavirus encephalomyelitis of piglets is usually sporadic

True

Canine coronavirus (CCoV-1) causes diarrhea in young susceptible dogs

True

Pantropic canine coronavirus infections are endemic worldwide

False

Canine coronavirus-2 infections are characterized by hemorrhagic diarrhea in puppies

True

Canine respiratory coronavirus infection results cross-protection against CCoV-1

False

Pantropic canine coronavirus causes a mild respiratory disease in suckling dogs

False

Canine coronavirus are only present in North America

False

Canine coronavirus vaccines effectively protect from any Canine coronavirus infection

False

There are no protective vaccines available against Canine enteric coronavirus

False

CCoV-IIa infections are endemic worldwid

False

In suckling dogs CCoV-II infection causes respiratory disease

False

Canine coronavirus is part of kennel cough

True

Feline coronavirus is a recombinant canine virus

True

Feline enteric coronavirus causes FIP in 5-10% of cases

True

FIP mainly infects with feces

True

Feline enteric coronavirus (FECoV) can only infect Felidae

True

Feline infectious peritonitis viruses from a single serotype

True

Effusive FIP is the result of a type 3 hypersensitivity reaction

True

Feline enteric coronavirus infection usually causes sudden death of queens

False

Feline enteric coronavirus infection of cats is very common

True

Vaccine effectively protects from feline infectious peritonitis

False

Feline coronavirus has two serotypes, both having two pathotypes

True

FECoV infection usually causes acute hemorrhagic enteritis

False

The Feline enteric coronavirus usually does not cause severe enteritis

True

FIP forms because of immunotolerance

False

In the presence of high-titer antibody level, infectious peritonitis cannot develop in cats

True

Infectious bronchitis has a lot of serotypes

True

Infectious bronchitis viruses may have different organ tropism

True

Germinative route is the most important in the transmission of infectious bronchitis

False

Infectious bronchitis viruses belong into 3 distinct serotypes

False

Inactivated vaccines can be used against infectious bronchitis

True

Attenuated vaccines can be used against infectious bronchitis

True

Infectious bronchitis viruses form 2 distinct serotypes

False

Infectious bronchitis viruses have a wide range of serotypes including many variants

True

The clinical signs of Infectious bronchitis and Newcastle disease may be similar

True

Turkey enteritis is characterized by age-dependent mortality rates

True

Vaccination of turkey breeding flocks against Turkey enteritis virus is mandatory

False

Equine arteritis virus is a uniform virus without serotypes, subtypes etc

True

Aerogenic infection can happen in the case of equine arteritis virus

True

Equine arteritis virus is shed in the semen

True

Equine arteritis virus can cause abortion

True

Equine arteritis virus is very resistant to physical damages

False

In case of equine viral arteritis, the rate of seroconverted animals increases with age

True

Lameness due to inflammatory joints is the most typical sign of Equine infectious arteritis

False

Equine infectious arteritis is a notifiable disease; therefore vaccinations are forbidden

False

The persistence of equine viral arteritis virus within one herd is usually caused by the stallions

True

Equine viral arteritis is transmitted by a sexual and aerogenic pathways

True

After equine viral arteritis virus infection, mortality rate is low

True

Equine viral arteritis is usually asymptomatic

True

Equine infectious arteritis is a notifiable disease

True

The main target of Equine viral arteritis virus is macrophages

True

Equine infectious arteritis is stenoxen viruses

True

Equine viral arteritis can be controlled in part by removing long-term carriers

True

Equine viral arteritis can affect donkeys

True

PRRS virus have 3 genotypes

False

PRRS is characterized by respiratory disease in adult pigs

False

Edema can be a sign of PRRS

True

PRRS is deadly in adult animals

True

PRRS virus affects the respiratory system in young piglets

True

Target cells of PRRSV are alveolar epithelial cells

False

PRRS causes immune suppression in prolonged cases

True

Attenuated and inactivated vaccines are available against PRRS

True

PRRS virus causes severe intestinal problems in adult pig

False

PRRS is characterized by respiratory problems in adult pigs

False

PRRS virus can only be isolated in porcine kidney cell culture

False

PRRS infection has two clinical phases

True

The Porcine reproductive and respiratory syndrome (PRRS) is only present in North-America

False

The PRRS virus may cause reproductive problems in boars

True

PRRS: cyanosis is one clinical symptom

True

Rhabdoviruses can survive in the environment for several months

False

Vesicular stomatitis is endemic in America

True

Vesicular stomatitis virus is transmitted only by arthropods

False

Increased salivation is a clinical sign of vesicular stomatitis

True

Vesicular stomatitis virus infects only swine

False

Cattle are not susceptible to vesicular stomatitis virus

False

Vesicular stomatitis virus can infect humans

True

Lesions of vesicular stomatitis heal within a few weeks

True

There are no vaccines for the prevention of vesicular stomatitis

False

Insects are involved in the transmission of vesicular stomatitis virus

True

Vesicular stomatitis virus can spread by direct contact

True

Vesicular stomatitis virus can cause severe disease in humans

False

Dogs maintain urban rabies

True

Saliva can contain rabies virus, before the appearance of clinical signs

True

Humans are not susceptible to European bat lyssaviruses

False

There is no haematogenic spreading of the rabies virus

False

Increased sexual activity is seen in rabid cattle

True

Paralysis is a typical sign of rabies

True

Dogs have to be vaccinated against rabies in the first week of life

False

The rabid bats fly during the day

True

Immunofluorescence (IF) is reliable in the diagnosis of rabies

True

Only the classical rabies virus is present in Europe

False

Urban form of rabies is maintained by the fox in Europe

False

Rabies virus is highly resistant

False

Rabies virus cannot be cultured

False

Presence of antibodies to rabies virus confirms the diagnosis of rabies

False

Immunofluorescence test is the most frequently used way of detection of rabies virus

True

Detection of Negri bodies is more sensitive than immunofluorescence test, in the case of rabies

False

Virus isolation is the most widely used way of diagnosis of rabies

True

Inhalation of the virus is the main way of infection with rabies virus

False

Rabies virus is replicating in the lymphoid cells and causes viraemia before the appearance of the clinical signs

False

The incubation time of rabies is variable, generally between 2 and 8 weeks

True

Aggressiveness is a frequent sign of rabies

True

Immunofluorescence test can be used to the detection of rabies virus in the brain

True

Rabid animals have to be vaccinated immediately

False

In cats furious form of rabies is typical

True

In dogs both furious and silent form of rabies can occur

True

Rabies has been eradicated in Europe

False

Rabies spread through venereal

False

The high-titer of virus neutralizing antibodies confirms the diagnosis of rabies

False

Live vaccines are used for the vaccination of foxes against rabies

True

Rabies symptoms appear only after CNS signs

False

Rabies virus can only be found in the nervous system

False

Retroviruses generally have a large host range

False

Retroviruses are generally shed in infected lymphoid cells

True

Certain retroviruses can cause malignant transformation

True

Certain retroviruses can cause proliferation of the lymphoid cells

True

Retroviruses spread with infected lymphocytes

True

Retroviruses have a tegument or rind

False

The animals will be infected with retroviruses until the end of their life

True

You cannot multiply retrovirus artificially

False

Retroviruses can incorporate into the genome

True

Retroviruses cannot spread from animal to animal

False

Retroviruses are widely distributed in Hungary

True

Reverse transcriptase is an important enzyme of retroviruses

True

Retroviruses results in life-long infection

True

Retroviruses replicate mainly in endothelium cell

False

Several retroviruses can cause malignant transformation in the hosts

True

Retroviruses are generally species specific

True

Retroviruses are generally resistant, they can survive in the environment for several weeks

False

Retroviruses frequently causes permanent infection

True

Retroviruses are generally stable viruses, mutations are very rare

False

Retrovirus can replicate without helper retroviruses

True

Retroviruses can integrate the cellular genome

True

The resistance of retroviruses is low, they cannot survive in the environment for a long time

True

Retroviruses are generally good antigens

True

Retroviruses have own metabolic enzymes

True

Enzootic bovine leukosis virus is not shed by the infected animals

False

Enzootic bovine leukosis virus can be transmitted with organic infection

True

Enzootic bovine leukosis virus can be transmitted with per os infection

True

Clinical signs of enzootic bovine leukosis are seen mainly in 6-8-month-old calves

False

Enzootic bovine leukosis virus has several serotypes and subtypes

False

Enzootic bovine leukosis can spread by air within the herd

True

Enzootic bovine leukosis can spread by veterinarian

True

Enzootic bovine leukosis virus can not result in tumor formation

False

Serological examination cannot be used to diagnosis of enzootic bovine leukosis

False

Immune tolerance can happen in the case of enzootic bovine leucosis

True

Selection cannot be used for eradication of enzootic bovine leucosis

False

During incubation phase of bovine enzootic leucosis the animal become seropositive

True

The tumors in the case of bovine enzootic leucosis can be seen from the age of 6 months

False

PCR is used for the detection of bovine enzootic leucosis in immunotolerant calves

True

Bovine enzootic leucosis can be eradicated with selection

True

Bovine enzootic leucosis virus has several serotypes

False

There is no horizontal spread in the case of bovine enzootic leucosis

False

There is genetic predisposition in the case of bovine enzootic leucosis

True

The target cell of bovine enzootic leucosis are the B-lymphocytes

True

Enzootic bovine leucosis occurs in all ruminant species

False

Enzootic bovine leucosis is spreading very fast in infected herds

False

Enzootic bovine leucosis virus can infect the fetus

True

Enzootic bovine leucosis only infects cattle

False

Enzootic bovine leukosis occurs only in Holstein-Frisian cattle, other cattle races are resistant

False

Enzootic bovine leukosis virus has low resistance; it cannot retain it's infectivity for a long time in the environment

True

Enzootic bovine leukosis virus can infect cattle, pigs and horses

False

Iatrogenic infection can be important in the transmission of enzootic bovine leukosis virus

True

Aerogenic infection occurs in the case of enzootic bovine leukosis virus

True

Genetic predisposition is present in the case of enzootic bovine leukosis

True

Enzootic bovine leukosis virus is spreading very fast within the herd

False

Only cattle are susceptible to enzootic bovine leukosis virus

False

Bovine enzootic leukosis virus has several serotypes

False

There is no horizontal spread in the case of bovine enzootic leukosis

False

There is genetic predisposition in the case of bovine enzootic leukosis

True

The target cells of bovine enzootic leukosis are the B-lymphocytes

True

During the incubation phase of bovine enzootic leukosis the animals become seropositive

True

Enzootic bovine leucosis virus causes disease in suckling calves

False

In the case of ovine pulmonary adenomatosis lesions are common in the liver

False

Ovine pulmonary andenomatosis can be diagnosed by detecting antibodies with ELISA

False

Ovine pulmonary adenomatosis virus causes interstitial pneumonia

False

Lung adenomatosis causes usually dry cough

False

Lung adenomatosis causes a lot of metastasis

False

Ovine pulmonary adenomatosis occurs only in South-Africa

False

Ovine pulmonary adenomatosis virus has no onc-gene

True

Metastasis are rare in the case of ovine pulmonary adenomatosis

True

Ovine pulmonary adenomatosis has no antibody production

True

Ovine pulmonary adenomatosis virus spreads with nasal discharge

True

Ovine pulmonary adenomatosis virus results in malignant transformation of macrophages

False

Metastases are frequently seen in parenchymal organs in the case of ovine pulmonary adenomatosis

False

Europe is free from ovine pulmonary adenomatosis

False

No antibodies to ovine pulmonary adenomatosis virus can be detected in infected animals

True

Feces of infected animals contain large amount of ovine pulmonary adenomatosis virus

False

Tumor transformation of the epithelial cells happens in the case of ovine pulmonary adenomatosis

True

Jaagsiekte affects lambs of 3-6 months

False

Jaagsiekte virus can transform human cells

False

Jaagsiekte is only present in Africa

False

Jaagsiekte causes metastatic abscess formation all over the body

False

Feline leukosis virus is immunosuppressive

True

Feline leukosis virus is frequently spread with saliva

True

Feline leukosis virus can infect dogs, cats and wild living carnivorous animals

False

Feline leukosis is a very rare disease

False

Feline sarcomatosis is a defect virus

True

Feline leukosis can cross the placenta

True

FeLV is a uniform virus

False

Infection with feline leukosis virus always appears in clinical signs

False

Feline leukosis virus is spreading by discharge of the infected animal

True

Persistently infected cats can shed the feline leukosis virus in high titers

True

Saliva of the animal contains large amount of the feline leukosis virus

True

Feline leucosis spreads by direct contact

True

Feline leukosis can infect cats and dogs

False

Asymptomatic infection cannot happen in the case of feline leukosis

False

Feline immunodeficiency virus is widespread

True

Feline immunodeficiency virus in cat could be asymptomatic

True

Feline immunodeficiency virus is a persistent infection

True

Feline immunodeficiency virus is spread by excretes

True

Feline immunodeficiency virus develops in 3 phases

True

Avian leukosis is seen during the first week of life in chicken

False

There are resistant lines to avian leukosis

True

Proportion of the animals with tumors is low, 1-4% in the case of avian leukosis

True

Inactivated vaccines are widely used in order to prevent avian leukosis

False

Avian leukosis virus can cause germinative infection

True

Tumors can be seen in different parenchymal organs in the case of avian leukosis

True

T-lymphocytes are the target cell of the avian leukosis virus

False

Avian leucosis and sarcoma infections are very common

True

Avian leucosis can be caused by different retroviruses

True

Congenital transmission of avian leucosis results in immune tolerance

True

Germinative infection can happen in the case of Reticuloendotheliosis

True

Immunosuppression is common in the case of Reticuloendotheliosis

True

Retardation is a clinical sign of Reticuloendotheliosis

True

Wide vaccination is used to prevent Reticuloendotheliosis

False

In the case of reticuloendotheliosis immunotolerant chicken can be hatched

True

Pneumonia is a typical lesion of reticuloendotheliosis

False

In the case of reticuloendotheliosis tumors can be found in the parenchymal organs

True

Avian reticuloendotheliosis may be similar in appearance to Marek ́s disease

True

Maedi appears in Hungary

True

Maedi is spreading fast

False

In the case of maedi/visna interstitial pneumonia can be seen

True

In order to eradicate maedi/visna infected ewes have to be culled with their lambs

True

Clinical sign of maedi/visna appear from the age of 6 months

False

Maedi/visna is spreading fast in the flock

False

Maedi/visna virus is shed only in the tracheal discharge

False

Clinical signs of maedi are generally seen above 3-4 years of age

True

Interstitial pneumonia is a typical lesion of maedi

True

In the case of maedi/visna interstitial pneumonia can be seen

True

Maedi and visna diseases are caused by the same virus

True

Caprine arthritis encephalitis is characterized by CNS signs in young goats

True

Caprine arthritis encephalitis virus replicates in the intestinal tract

False

Equine infectious anemia can damage the medulla of the bone

True

Equine infectious anemia virus is resistant, it can survive several months in the environment

True

Only Equidae are susceptible to equine infectious anemia virus

True

Equine infectious anemia has a weak resistance

False

Febrile waves can be seen in equine infectious anemia

True

Equine infectious anemia virus causes persistent infection

True

You cannot diagnose Equine infectious anemia with serology

False

Tick are vectors of equine infectious anemia virus

False

The resistance of equine infectious anemia is very low

False

Horses and cattle are susceptible to equine infectious anemia virus

False

In the case of equine infectious anemia, hemorrhages cannot be seen

Flase

Animals infected with equine infectious anemia virus are lifelong carriers

True

Equine infectious anemia virus is mainly transmitted with tracheal discharge

Flase

Equine infectious anemia virus damages the bone marrow

True

Attenuated vaccines are used for the prevention of equine infectious anemia

False

Equine infectious anemia can be asymptomatic

True

Equine infectious anemia may cause recurrent fever in horses

True

The resistance of equine infectious anemia is very low

False

Horses and cattle are susceptible to equine infectious anemia virus

False

Equine infectious anemia virus causes persistent infection

True

In the case of equine infectious anemia hemorrhages cannot be seen

False

Horseflies are mechanical vectors equine anemia virus

True

Equine anemia is a zoonotic disease

False

Equine anemia is a notifiable disease

True

Midterm 3 (3) Flashcards

(491 cards)