Reo, Birna, Orthomyxo, Orthobunya Flashcards
Orbiviruses spread by droplet (aerosol) infection
False
Orbiviruses can be cultivated in vivo by inoculation of embryonated eggs
True
Genetic reassortments may cause significant antigenic changes in reovirus strains
True
Orbiviruses are serologically uniform
False
Orbiviruses are mainly arboviruses
True
Reoviruses are sensitive to lipid solvents and detergents.
False
Orthoreoviruses frequently cause tenosynovitis of horses
False
Orthoreoviruses can cause pneumoenteritis in calves
True
Orthoreoviruses can cause pneumoenteritis in cattle
True
Avian orthoreo –and rotaviruses can cause runting sunting syndrome in chickens
True
Avian orthoreoviruses cause mainly nephritis and encephalitis
False
Infection of adult birds with orthoreoviruses usually remains subclinical
True
Avian orthoreoviruses usually transmitted by germinative route
True
Avian orthoreoviruses can cause damages in the bursa Fabricii
True
Mammalian orthoreoviruses can cause pneumoenteritis only in suckling animals
False
Orthoreovirus can cause tenosynovitis in pigs
False
Avian orthoreoviruses usually cause disease in adult birds
False
Tenosynovitis is one of the most frequent manifestations of avian orthoreovirus infections
True
Trypsin-sensititive avian orthoreovirus usually cause respiratory disease in birds
True
Yolk immunity does not influence the efficacy of vaccination against avian orthoreovirus
False
Avian orthoreoviruses may cause necrotic foci in the visceral organs of birds
True
Avian orthoreoviruses can cause inapparent infection in poultry
True
Orthoreoviruses can be detected by haemagglutination test
True
Trypsin resistant strains of Avian orthoreoviruses frequently cause diarrhoea
True
Trypsin sensitive strains of avian orthoreoviruses frequently cause tenosynovitis
True
Horses usually develop lethal hemorrhagic enteritis in Orthoreovirus infections
False
Infection of adult birds with Orthoreoviruses usually remains subclinical
True
Orthoreoviruses can cause encephalitis in cattle
False
Avian orthoreoviruses can cause inapparent infections in poultry
True
Avian orthoreoviruses can cause poult enteritis-mortality syndrome (PEMS)
True
Infectious tenosynovitis can be prevented by vaccination
True
Avian orthoreoviruses infect only via inhalation and parenterally
False
Avian orthoreoviruses only infect via PO infections
False
All Avian orthoreoviruses can spread germinatively
True
Helicopter disease causes feather problems
True
Orthoreovirus infections cause immunosuppression in birds
True
Tenosynovitis is a frequent sign of Avian Orthoreovirus infection
True
Orthoreovirus mainly infects younger animals
True
Orthoreovirus causes respiratory and GI disease
True
Tenosynovitis is caused by only one Orthoreovirus
False
Orthoreoviruses frequently cause tenosynovitis of horses
False
Rotaviruses are sensitive to environmental conditions
False
Rotavirus infection is sporadic within the herd
False
Rotavirus only infects mammals
False
Clinical signs of rotavirus infection are usually seen in animals older than 2 weeks of age
False
Swine is not susceptible to rotavirus infection
False
Rotaviruses predispose to E.Coli infection in suckling piglets
True
Rotaviruses are shed in the faeces in high titres
True
Rotavirus infection results in high mortality
False
Avian rotaviruses are transmitted by germinative infection
False
Losses due to rotavirus infection of young animals can be prevented by colostrum feeding
True
Rotaviruses usually cause enteritis in young (1-2 weeks old) animals
True
Clinical signs of rotavirus infection are usually seen in animals older than 2 weeks of age
False
Rotaviruses damage the mucosa of the large intestines
False
Rotaviruses are serologically uniform
False
Rotaviruses are typically transmitted via the faecal oral route
True
Swine rotavirus infection is frequently followed by E. coli secondary infection in piglets
True
Avian rotaviruses can cause tenosynovitis
False
Rotaviral enteritis of calves can be prevented by immunization of pregnant cows
True
Rotaviruses can cause chronic enteritis and persistent infection
False
Rotaviruses cause mainly respiratory signs in cattle
False
Rotaviruses mainly cause respiratory disease in older animals
False
Rotaviruses typically cause respiratory disease in 3-6 month old calves
False
Rotavirus is species specific
False
Rotaviruses frequently cause tenosynovitis in birds
False
Vaccination of horses in the Americas is used to prevent rotavirus infections
True
Bluetongue is present only in tropical areas
False
Rodents serve as reservoirs of bluetongue
False
Ibaraki disease is clinically very similar to bluetongue
True
Ibaraki disease virus can be used to immunize cattle against bluetongue
false
Lameness is a frequent symptom of bluetongue in sheep
True
Bluetongue virus can cause bloody diarrhoea in lambs
True
Bluetongue is named after cyanosis of the tongue
True
The bluetongue virus is vectored by midges/ gnats
True
Cattle can carry the bluetongue virus for years without symptoms
True
Wild birds play the most important role in the distribution of bluetongue
False
In Europe vaccination of small ruminants against bluetongue is mandatory
False
Bluetongue virus is also foetopathic
True
Bluetongue virus may cause foetal developmental problems
True
Lameness and abortion are signs of bluetongue
True
Bluetongue occurs only in Africa and Australia
False
Bluetongue is transmitted by ticks
False
Bluetongue virus is typically vectored by ticks
False
Bluetongue can be transmitted by semen
True
Goats are more resistant to the bluetongue than sheep
True
Goats are not susceptible to bluetongue virus
False
Vaccination against Bluetongue results serotype specific immunity
True
Bluetongue disease occurs only in Africa
False
Bluetongue virus infects also horses and dogs
False
Endothelial damages are the most important causes of the clinical signs of bluetongue
True
A serotype 8 of bluetongue virus strain caused severe outbreak in Europe in 2006-2009
True
Bluetongue outbreaks mainly occur is summer and autumn
True
Sheep are less sensitive to Bluetongue than swine
False
Bluetongue causes transient infection in cattle
False
Bluetongue vaccines induce serotype-specific immunity
True
Bluetongue is named after the pseudo-melanosis of the tongue
False
Bluetongue also infects horses and dogs
False
Ibaraki disease virus immunizes against bluetongue
False
Bluetongue disease is present only in tropical and sub-tropical countries
False
Wild birds are the natural reservoir host of the Bluetongue virus.
False
In utero Bluetongue virus infection may result in immunotolerance
True
The most severe clinical manifestation of Bluetongue disease is usually seen in goats
False
Bluetongue is an Orbivirus
True
Bluetongue primarily spreads with blood sucking insects
True
Bluetongue replicates in endothelial cells of blood vessels
True
The causative agent of Bluetongue multiplies in endothelium
True
Bluetongue has 24 known serotypes
False
Bluetongue is an enteral disease of turkeys
False
Bluetongue causes symptoms mostly in sheep and goat
False
Bluetongue is not present in Europe
False
Bluetongue causes skin signs in bovine
True
Bluetongue also infects pigs
False
Bluetongue infects all hooved animals
False
No long-term carrier stage is observed in Bluetongue virus infections
False
Ruminants and swine are the most important hosts of the Bluetongue virus
False
Lameness is one of the clinical signs of Bluetongue disease in sheep
True
Serological cross protection exists between 25 known serotypes of Bluetongue virus
False
Ibarki disease is a Bluetongue-like disease in Asia and in America
True
The serotype 8 strain of the bluetongue virus, which emerged in Western Europe, does not cause clinical signs in cattle
False
The epizootic haemorrhagic fever is observed in the USA in wild deer
True
Epizootic haemorrhagic disease was described only in Australia so far
False
Epizootic hemorrhage fever is a Bluetongue-like disease of wild ruminants in America
True
African horse sickness is mostly a peracute disease
False
African horse sickness virus is endemic in Russia since 2008
False
The Infectious equine arthritis and the African horse sickness ay have similar clinical signs
True
Oedemas and haemorrhages are the most frequent lesions in African horse sickness
True
African horse sickness is spread by ticks
False
African horse sickness is zoonotic
False
Frothy nasal discharge is a characteristic sign of African horse sickness
True
The subacute form of African horses sickness is causing oedema formation and heart failure
True
Encephalitis is the most frequent sign of African horse sickness
False
Acute form of African horse sickness occurs mainly in zebras and horses
False
Carnivores are susceptible to African horse sickness
True
Occasionally carnivores may get infected with African horse sickness virus
True
The natural reservoirs of the African horse sickness virus are mainly zebras
True
Subcutaneous oedema is a frequent symptom of subacute African horse sickness
True
Zebras are more resistant to African horse sickness than horses
True
Immunized horses may develop a chronic febrile form of the African horse sickness
True
Zebras are not susceptible to African horse sickness
False
Wild birds play the most important role in the spreading of African horse sickness
False
The chronic form of African horse sickness may be similar to EIA
True
African horse sickness is a communicable disease
True
In the pathogenesis of African horse sickness, viraemia lasts longer in horse than in zebras
False
The African horse sickness is endemic in Europe and in the USA
False
The signs of chronic African Horse Sickness and Equine Infectious anaemia may be similar
True
The natural reservoirs of the African Horse Sickness virus are mainly zebras
True
African horse sickness was transported to Europe by migratory birds
False
African horse sickness can cause encephalitis
False
African horse sickness is a notifiable (communicable) disease in Europe
True
African horse sickness can cause lung oedema
True
African horse sickness is prevented in Africa by combined vaccines
True
African Horse Sickness is a frequent disease, distributed worldwide
False
Respiratory signs are the most frequent symptoms in acute African Horse Sickness
True
The differential diagnosis of African Horse Sickness and Tetanus is rather complicated
False
African Horse Sickness is spread primarily by “small mosquitos”
False
Carriers for African Horse Sickness are zebras and donkeys
True
African Horse Sickness is not present in Europe today
True
African Horse Sickness is caused by an arbovirus
True