Flashcards in Tick-borne diseases Deck (10):
CS in humans
vector = Ixodes (acquired from white-footed mouse)
CS in humans: erythema migrans (cutaneous rash)
CS in dogs: arthritis, lymphadenopathy, fever, anorexia
vector 1 carries what agent? what does it cause?
vector 2 carries what agent? what does it cause?
vector 1 = Ambylomma
agent: Anaplasma phagocytophila (used to be called E. ewingii)
causes: Canine GRANULOCYTIC ehrlichiosis
vector 2 = Rhipicephalus
agent: Ehlirchia canis
causes: Canine MONOCYTIC ehrlichiosis
CS: fever, anorexia, edema of limbs, oral vesicles, petechiation, joint pain and swelling, aqueous flare and retinitis, hypoalbuminemia, increased ALP
Rocky Mountain Spotted Fever
agent: Rickettsia rickettsii
CS: same as ehrlichia (fever, edema of limbs, oral vesicles, joint pain, etc) BUT RMSF has a clinical course >2 weeks
how are cats and dogs infected?
which animal is relatively resistant?
cats and dogs infected by close contact with RABBITS
vector = ticks
zoonotic - potential biowarfare agent
the dog is relatively resistant
CS: depression, fever, anorexia, lymphadenopathy, oral ulceration
what does it look like?
vector = dermacentor
CS: almost 100% fatal - dark urine, icterus, fever, DIC, anemia
- ring-shaped organism in RBCs or schizonts in spleen, liver, bone marrow, etc.
seen in what animal
how is it transmitted?
what does it cause?
any blood feeding insect but mostly ticks
causes extravascular hemolysis but NO hemoglobinuria (which is how you differentiate it)
what does it cause
which animals are predisposed?
cow, dogs and horses
vector: BOOPHILUS ticks
causes RBC destruction --> anemia and thrombocytopenia
- greyhounds and pit bulls predisposed
what is the disease?
what does it cause?
vector: Amblyomma - seen in Africa and west indies
causes fatal encephalitis in ruminants
Epizootic bovine abortion (EBA)
common name for disease?
foothills abortion (CA foothills)
- vector: Ornithodoros coriaceus (soft tick)
- CS: aborted fetus showing large LN and spleen, destructed thymus