Picornaviridae Flashcards
What is the smallest of the RNA viruses?
Picornavirdae
Picornaviridae is very ____ in the environment
stable
There is very little ____ between serotypes of Picornaviridae
cross protection
Picornaviridae are rapidly ____
cytolytic
True/False: Picornadviriae produce inclusion bodies
False
What is the causative agent of foot and mouth disease?
Aphthovirus
Foot and mouth disease is a ___ moving disease
very fast
What is the main pathogenesis with Foot and Mouth disease?
Ulcers
*of tongue, lips, feet ect
Is foot an mouth disease reportable?
YES!
What animals are the most susceptible to Foot and mouth disease?
Pigs and cattle
What animals is a huge cause of spread of Foot and Mouth disease?
swine
What animal is genetically resistant to Foot and mouth disease, but can still act as a mechanical vector?
Horses
In foot and mouth disease, virus can be excreted prior to the development of ____
clinical signs
Is there cross protection between the Foot and Mouth disease serotypes?
no
How is foot and mouth disease trasmitted?
ingestion or inhalation
*there is aerosol transmission
In Foot and Mouth disease, which animal does not have a carrier state?
swine!
*carrier state only in ruminants
Foot and Mouth disease causes higher mortality in ____, because they have a higher chance of myocardial replication of the virus leading to heart attacks
neonates
_____ can lead to abortion of a pregnant cow in Foot and Mouth disease
dehydration
Animals with Foot and Mouth disease ____ profusely
salivate
Do we vaccinate in Foot and Mouth disease?
Yes, but only in endemic areas
How is Foot and Mouth disease controlled?
Quarantine and slaughter of all susceptible animals (cows and swine)
True/False: Foot and Mouth disease is exotic in the US?
true
Avian Encephalomyelitis is a disease of what hosts?
baby chicks
turkey poults
What is the etiological agent in Avian Encephalomyelitis?
Avian Tremovirus
Avian Encephalomyelitis cause a dramatic decrease in ____ production
egg
What is the main clinical sign of Avian Encephalomyelitis?
tremors
birds will be constantly shaking
What is the main mode of transmission in Avian Encephalomyelitis?
feca-oral
Avian Encephalomyelitis is a ____ disease
CNS
Do we vaccinate in Avian Encephalomyelitis?
Yes
Hens are vaccinated to pass immunity to chicks and poults
What is the etiological agent of Encephalomyocarditis?
Cardiovirus
Encephalomyeocarditis is a virus transmitted via _____ and mainly causing pathogeneis in _____
transmitted via rodents (*rodent virus)
swine
How is Encephalomyocarditis transmitted?
rodent urine or feces in swine drinking water or feed
Encephalomyocarditis has sudden onset and causes necrotic lesions in the ____ of pigs
myocardium
*sudden death- heart attacks
How is Encephalomyocarditis controlled?
Rodent control
Do we vaccinate in Encephalomyocarditis?
Yes
Vaccinate dams to pass immunity to piglets
