Midterm 2 part 2 chapter IV Flashcards
The Border disease is a hemorrhagic, respiratory syndrome in sheep.
False
In the sheep, border disease may cause a disease similar to the BVD.
True
Border disease is a respiratory and enteric disease of lambs.
False
Border disease occurs in Hungary.
True
Border disease causes abortion in ewes.
True
Border disease of sheep can be controlled by screening for carriers
True
All wild type of strains of classical swine fever are highly virulent.
False
Six distinct serotypes of classical swine fever virus are recognized so far.
False
Classical swine fever virus is an arbovirus.
False
Classical swine fever virus is a zoonotic agent.
False
Classical swine fever virus infection has an immunosuppressive effect.
True
Pigs shed classical swine fever virus only during the clinical stage of the disease.
False
Central nervous signs might be seen in classical swine fever.
True
Based on pathology and clinical signs, chronic classical fever is easy to diagnose
False
All known strains of the Classical swine fever virus are highly virulent.
False
Classical swine fever Virus spreads slowly in the host and causes mainly chronic disease.
False
Complicated forms of the Classical swine fever are rarely seen.
False
The Classical swine fever virus may cause reproductive disorders.
True
Hemorrhages are the most typical lesions of acute Classical swine fever.
True
Classical swine fever can unambiguously diagnosed by the clinical signs and pathology.
False
Domestic swine of most European countries are free from Classical swine fever virus.
True
The Classical swine fever may appear in a milder form in wild boar than in domestic swine.
True
Low virulence strains of CSFV may lead to asymptomatic infection.
True
CSF is spread via infected pigs
True
Sows infected by CSF will have immunotolerant piglets.
True
Piglets of sows vaccinated against CSF are vaccinated at 6-12 months
False
To prevent CSF, we vaccinate pigs older than 6 months of age with live vaccine.
False
To prevent CSF we use inactivated vaccines made from the Chinese strain.
False
Shedding may start 2-3 days after first clinical signs.
False
CSF can be prevented by inactivated vaccines.
False
CSF can hardly be distinguished from African swine fever.
True
CSF always causes abortion in pigs.
False
Hungary does not have to make any preventative action against CSF.
False
Incubation of CSF is 8-22 days.
True
CSF was first written about in USA.
True
First symptom of CSF is drooping ears.
False
CSF virus has good resistance.
True
Classical swine fever virus (CSFV) is mainly transmitted by mosquitoes.
False
The presence of CSFV in a herd does not influence reproduction parameters.
False
CSF is frequently complicated with bacterial infections.
True
The clinical signs of CSF and ASF are similar.
True
Central nervous signs are never seen in CSF.
False
Serological cross reactions my occur between BVD virus and CSFV.
False
Only inactivated vaccines are available against CSFV.
False
It is a disease of domestic swine and wild boars, but several other species are also susceptible.
False
Only domestic swine and wild boar is susceptible
True
Fever, anorexia haemorrhages in the skin and weakness of the hind legs are the most important signs for CSF.
True
For prevention state medical steps and vaccination are used in Europe.
False
The CSFV typically damages endothelial- and lymphatic tissues.
True
Boutons in the large intestine are the earliest lesions in CSF.
False
Swine shed CSFV only in the terminal phase of the disease.
False
Wild boar may play a role in the maintenance and spread of Classical swine fever.
True
In Europe vaccination of domestic pigs against Classical swine fever is common.
False
Classical swine fever is a notifiable disease in Europe
True
In Europe vaccination of domestic swine populations against CSF is compulsory.
False
Orthobunyaviruses are transmitted by hematophagous arthropods.
True
Several virus species belong to Bunyaviridae family, many present only in tropical regions.
True
Bunyaviruses are typically arboviruses.
True
Several bunyaviruses are zoonotic agents.
True
Serological cross-reactions are frequent between related bunyaviruses.
True
Bunyaviriuses has good antigens and good immune reaction.
True
Akabane disease virus causes fetal damage in sheep.
True
The main symptoms of the akabane disease are fetal development disorders.
True
The akabane disease can cause abortion in sheep.
True
The main symptoms of akabane disease are the malformation of the fetus.
True
Akabane, Aino and Schmallenberg viruses cause similar disease in ruminants.
True
Akabane occurs in South-West Africa and is a disease of swine.
False
The Akabane disease is mainly seen in geese.
False
Abortions and fetal malformations are the most typical signs of Akabane disease.
True
Schmallenberg virus causes fetal damages in sheep.
True
Schmallenberg virus emerged in Western Europe, in 2011, and spread rapidly in ruminants.
True
In sheep the Schmallenberg virus mainly causes fetal malformations.
True
Schmallenberg virus causes severe diseases in humans.
False
Schmallenberg spread by midges vectors.
True
No human case report on Schmallenberg virus.
True
Pneumonia and abortion are the main signs of Schmallenberg virus infection in sheep
False
Signs of acute Schmallenberg virus infection in cattle are lower and reduced milk production.
True
Rift valley fever virus causes fetal damages in sheep.
False
Rift Valley fever virus caused severe human outbreaks in Africa and in the Arab peninsula.
True
Necrotic hepatitis is a typical lesion of Rift Valley fever.
True
The principle vectors of the rift valley disease are gnats.
False
Rift valley fever outbreaks are most frequently seen in horses.
False
Rift valley fever virus may cause 100% mortality in young susceptible animals.
True
In enzootic regions vaccines are used for the prevention of rift valley fever.
True
Rift valley fever may cause high mortality in young ruminants
True
Nairobi disease viruses causes fetal damages in sheep.
True
Hemorrhagic gastroenteritis is a typical lesion of Nairobi sheep disease.
True
Crimean-Congo Haemorrhagic fever virus is tick born.
True
The Nairobi sheep disease may cause abortion in pregnant ewes.
True
The most important symptom of the Nairobi sheep disease is nephritis.
False
Nairobi disease occurs mainly in sheep.
True
The leading symptom of Nairobi disease is renal insufficiency.
False
The Nairobi sheep disease is vectored by ticks.
True
Hantaviruses cause hemorrhagic fevers in rodents.
False
Hanta viruses can cause renal symptoms in humans.
True
Mainly rodents are the natural reservoir of hanta viruses.
True
In domestic animals Hanta viruses typically cause liver dystrophy.
False
Hanta virus infected people may develop severe renal failure.
True
Hantavirus may cause respiratory disease in humans.
False
Hanta viruses cause encephalitis in horses
False
