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21 Cards in this Set

  • Front
  • Back
Diseases caused by Circoviridae
Chicken Anemia Virus (CAV)
Porcine Circovirus (PCV)
Psittacine Beak and Feather Disease Virus (PBFDV)
Diseases caused by Parvoviridae
Canine Parvovirus 2 (CPV)
Feline Panleukopenia Virus (FPV)
Porcine Parvovirus (SMEDI)
Name the disease caused by Porcine Circovirus
Postweaning Multisystemic Wasting Syndrome (PMWS)
Describe the basic pathogenesis of PCV infection:
1. Transmission 2. How it causes dz
1. Transmission: Fecal-oral (major), verticle & respiratory (minor)
2. Virus is non-cytopathic: causes chronic inf'n->cytokine storm->wasting
Important factors for PCV dz
Immune stimulant triggers (endemic infection with not all pigs sick). Intenstive management key player, genetics and vaccination
Describe the major lesions of PCV Dz
Key: granulomatous lymphadentitis with lymphoid depletion. Every system affected: Resp, Hepatic, GIT, Renal, Cardiac, Reproductive (gilts).
List major clinical signs of PCV Dz
Wasting, respiratory, diarrhea, icterus, pallor
How is PCV Dz diffinately diagnosed?
IHC or In Situ Hybridization
NOT serology or PCR because ubiquitous in the environmnent of pig barns
How can PCV Dz be controlled?
Good Biosecurity: cleaning, decrease mixing, good air quality, vaccination (sows and/or pigs)
Describe what PBFD (Psittacine Beak and Feather Dz) would look like.
Loss and abnormal growth of feathers, abnormal beak growth
Secondary Infections (decrease immunity)
How is PBFD Diagnosed?
Skin/Feather Biopseys (ok)
PCR (on blood sample),(good for enviro too!)
If +, sample again 60-90 days later
Describe Chicken Anemia Virus dz:
Clinical Signs
Horizontal and verticle trans.
Acute immunosuppression:
Dx: serology, virus demonstration in tissue
T or F: Parvoviruses as naked, therefore hard to decontaminated eniro.
From what virus did the Canine Parvovirus evolve?
Feline Panleukopenia Virus and the Mink Parvo virus
Describe the pathogenesis of Parvovirus infections
Fecal-Oral-lymph nodes(primary replication)-viremia-spread to heart, GIT, brain, fetuses.
What type of cells do Parvoviruses replicate in? What enzyme is required?
List important replication sites.
Actively dividing cells (S-phase).
Need cellular DNA Polymerase
*Crypt cells of intestine
*Peyer's Patches
*Cardiac Myocytes
*Cerebellum (granular cells)
Describe the sequelae of in utero infections with Parvovirus for dogs and cats.
Kittens: cerebellar hypoplasia (hypermetric gate)
Puppies: myocarditis leads to fibrosis and heartfailure.
Discuss the clinical signs of postnatal infections with parvovirus.
Bloody diarrhea,vomiting (dehydration and shock)
leukopenia, neutropenia
Secondary Bacterial infection
How is parvovirus diagnosed?
Capture ELISA (less sensitive, but ok for practice)
Virus Isolation
How can parvovirus be controlled?
Vaccination: must overcome maternal AB (biweekly or 'hot' vaccines)
Describe what effect Procine Parvo has on the herd
Reproductive Problems!
Embryonic Death