Quiz 3 Flashcards
Rodents are the reservoir for this disease which is mainly significant to humans
Colorado tick fever virus (CTFV)
a _______ genome makes it difficult to cross-protect against different strains of a virus
segmented
The nine serotypes of this orbivirus cause an infectious but NOT contagious disease of horses, mules, and donkeys. The zebra is the natural host and reservoir. Clinical signs include diffuse pulmonary edema.
African horse sickness virus
Causes infectious diseases of wildlife, sheep, alpacas, and cattle. Clinical signs may include fever, depression, lameness, edema of the tongue and head, hyperemia, abortion, and death
Bluetongue virus
The _____ form of african horse sickness presents with nasal discharge
The ___ form presents as conjuctivitis
Peractue pulmonary
subacute cardiac
Describe why BTV vaccines for sheep shouldn’t be given to cattle
concerns about amplification of virus and dissemination via Culicoides vectors
These TYPE of viruses are species specific and are associated with diarrhea (calf scours)
Rotoviruses
Negative sense single stranded RNA viruses must bring what enzyme with them to be able to replicate?
RNA-dependent RNA polyermase
Infectious ________ disease virus is a virus in the family Birnaviridae which causes “Gumboro” disease which is highly immunosuppressive diesease in young chicks due to destruction of B lymphocytes and their precursors.
infectious bursal disease virus (IBDV)
Name the common features of viruses included in the Mononegavirales order
enveloped
SS, negative sense, RNA
formation of syncytia and intracytoplasmic, acidophilic inclusions are features of infection with these viruses
Paramyxoviridae
Give one reason eradication of rinderpest was possible
absence of carrier animals and wildlife reservoirs
This virus causes a condition referred to as goat plague
Peste des petits ruminants virus (PPRV)
This paramyxovirus which caused acute disease in cattle with morbidity and mortality reaching 90 to 100% was considered to be globally eradicated in 2011! The virus caused enteric lesions associated with severe diarrhea.
Rinderpest virus
Orbiviruses, which include African horse sickness, Bluetongue, and Epizootic hemorrhagic disease virus, are commonly spread by __________.
Blood sucking insects
This virus causes a highly contagious, generalized pathogenic infection of dogs and other carnivores. In the absence of an immune response, dissemination can occur. Associated with encephalitis in older dogs and hyperkeratosis (hard nose)
Canine distemper virus
This virus produces BOTH intranuclear and intracytoplasmic inclusion bodies
Canine distemper virus
a zoonotic morbillivirus associated with febrile encephalitis in swine and people of malaysia
Nipah virus
The most important avian paramyxovirus, classified by its tropism for specific tissues
Newcastle disease virus (NDV)
Which 2 pathotypes of newcastle disease virus are associated with 100% mortality
Viscerotropic velogenic
Neurotropic velogenic
Not found in the US, this disease is associated with neurologic signs and corneal opacity in young pigs
Blue eye disease in pigs
These two paramyxoviruses are important members of the bovine respiratory disease complex
Bovine parainfluena virus 3
Bovine respiratory syncytial virus (more pathogenic)
Infection with this virus affects the central nervous system, replicates in the salivary glands, and is transmitted by bites
Rabies virus
The name of the intracytoplasmic inclusion bodies created by rabies virus
Negri bodies
This rhabdovirus causes vesicular lesions in pigs, sheep, cattle, and horses; it is endemic in areas of the US and is zoonotic
Vesicular stomatitis virus
this arthropod-borne viral disease of cattle and water buffalo is known as “3-day sickness” and is marked by a biphasic/polyphasic fever
Bovine ephemeral fever
These virus have caused large outbreaks and have substantial epidemic potential.
Filoviridae
This Mononegvirales virus is an exception in that it replicates in the nucleus. It has been described mainly in young horses and can cause fever and neurological disturbance
Borna disease virus
This family of viruses contains viruses that cause influenza in people and animals.
Orthomyxoviridae
New subtypes of influenza A virus emerge periodically as a result of point mutation and ___ ______
genetic reassortment
Why are we most likely to see development of new influenza strains in pigs?
they are the reassortment host
Referred to as fowl plague, this virus is maintained in wild bird populations and can cause respiratory distress, diarrhea, sinusitis, and lacrimation
Avian influenza
This virus of swine is associated with recent introduction of pigs into a herd and is limited to the respiratory tract
Swine influenza
This disease of horses is characterized by nasal discharge, dry cough, and depression. Outbreaks are associated with movement and assembly of horses. It is highly contagious.
Equine influenza
Name the 4 viruses included in Mononegvirales
Paramyxoviridae
Rhabdoviridae
Filoviridae
Bornaviridae
