Chlamydia felis

-Gram negative rod

-causes conjunctivitis in cats, pneumonitis in kittens

Chlamydia psittaci

- gram negative rod

- causes anorexia, depression, nasal and ocular discharge, greenish yellow diarrhea in Turkeys!

- Necropsy: lung congestion, air sacculitis, pericarditis, hepatomegaly, spleenomegaly

- # 1 zoonotic problem in Turkeys

- people inhale dust/ aerosol droplets

Chlamydia abortus and Chlamydia pecorum

- enzootic abortion in sheep

- damage of placenta causes late stage abortion in sheep, retained placenta, vaginal discharge, fever, thick and clay colored cotolydons

- can also cause polyarthritis in sheep

-lambs can get pneumonia and CNS disease

R. rickettsia

- Causes Rocky Mountain Spotted Fever

- dogs and humans

- Clinical Signs: high fever, hemorrhagic mm's, painful joints and lymph nodes, CNS sxs, Kidney and heart failure

Coxiella burnetti

- Causes Q fever

- Ruminants and humans

- inhale, ingest, or arthropod (tick bite)

- can be in mammary gland (zoonotic) up to 32 months

- can cause abortions

Rickettsia

pathogenesis

- hematogenous entry

- proliferates in endothelial cells and phagocytes

- escapes the phagolysosome

- causes cell lysis resulting in vascular damage

Coxiella

Pathogenesis

- hematogenous entry

- proliferates in endothelial cells and phagocytes

- proliferates in phagolysosome

- causes cell lysis resulting in vascular damage

Ehrlichia canis

- monocytic ehrlichiosis

- long incubation up to 3 weeks, remain carriers 29 mths

- fever, thrombocytopenia, leukopenia, anemia

Neorickettsia helminthoeca

- salmon poisoning disease

- from liver fluke infestation of nanophytes salmoncola

Anaplasma marginale

- bovine anaplasmosis

- can see anaplasma in RBCs it forms an occlusion along the margin of the cell