Ehrlichiosis 30% Flashcards
What is ehrlichiosis
gram negative bacterium of the Rickettisiales order.
The primary vector for E. canis is the Rhipicephalus sanguineus tick.
incubation ehrlichiosis
7-21 days
clinical signs ehrlichiosis
Clinical signs can be seen in the acute and chronic phases of disease. Clinical signs include depression, dehydration, fever, anorexia, weight loss, vomiting, diarrhea, lymphadenopathy, hepatomegaly, and splenomegaly.
Bleeding abnormalities can include epistaxis, petechiae, ecchymoses, and pale mucous membranes.
Ocular abnormalities include ocular discharge, retinal hemorrhages, retinal detachment, blindness, chorioretinitis, uveitis, keratoconjunctivitis sicca, hyphema, corneal ulceration, and glaucoma.
Neurologic abnormalities include vestibular signs, ataxia, hyperesthesia, anisocoria, stupor, seizures, and tremors.
diagnosis ehrlichiosis
snap test, pcr, cbc (anemia, thrombocyopenia)
treatment ehrlichiosis
doxycycline
symptoms - prednisone (cbc)
prognosis ehrlichiosis
Overall prognosis for acutely infected dogs is good if treatment is initiated early. Marked improvement is usually seen within 24-48 hours after initiation of appropriate antimicrobial therapy.
Prognosis for dogs with chronic CME is poorer
zoonosis ehrlichiosis
E. canis DNA has been detected in people with human monocytic ehrlichiosis. Dogs may serve as a reservoir for infection but direct transmission from dogs to people is unproven. E. canis is not currently considered a zoonotic pathogen
co-infection ehrlichiosis
Co-infection with other infectious agents or hemoparasites can occur with CME. Hepatozoon canis and Babesia canis vogeli are transmitted by the same tick vector, R. sanguineus. Testing for other infectious agents may be indicated/needed.