Rickettsial Parasites Flashcards
What are Rickettsial organisms?
A group of obligate intracellular, Gram negative bacteria
Tick-borne
Prokaryotic
What bacteria claims dogs, foxes, ferrets, rodents, raccoons and humans as its host?
Rickettsia rickettsii
What is the common name of the infection caused by Rickettisa rickettsii?
Rocky Mountain Spotted Fever
What cell is Rickettsia rickettsii found in?
Endothelial cells
What is the most common fatal tick-borne disease?
Rocky mountain spotted fever
What are the clinical signs of Rickettsia rickettsii in humans?
Fever Aching muscles Vomiting Diarrhea Spotted rash
What bacteria effects cattle?
Anaplasma marginale
In what cells is Anaplasma marginale found?
Red blood cells
What ticks transmit Rickettsia rickettsii?
Dermacentor spp
Amblyomma americanum
Rhipcephalus sanguines
What ticks spread Anaplasma marginale?
Dermacentor spp
Is Anaplasma marginale zoonotic?
No
What is considered one of the most expensive tick-borne bacterias?
Anaplasma marginale
What rickettsial bacteria calls dogs their host?
Anaplasma platys
What is the common name of the condition caused by Anaplasma platys?
Infectious Canine Cyclic Thrombocytopenia (ICCT)
Anaplasma platys is found in what cells?
Platelets
What ticks transmit Anaplasma platys
Rhipcephalus sanguines
Dermacentor spp
What does an Anaplasma platys infection cause in humans?
Decreased appetite Weakness Muscle pain Fatigue Headaches
What anaplasma rickettsial bacteria is found in dogs and cats?
Anaplasma phagocytophilum
Anaplasma phagocyophilum is found in what cells?
White blood cells
What ticks transmit Anaplasma phagocytophilum?
Ixodes scapularis
Ixodes pacificus
What does Anaplasma phagocytophilum cause in people?
Headache
Fever
Chills
Muscle Aches
What rickettsial bacteria is found in Dogs and Cats
Ehrlichia ewingii
What is the common name of the condition caused by Ehrlichia ewingii
Ehrlichia
Ehrlichia ewingii is found in what cells?
Morulae in the granulocytes
What tick transmits Ehrlichia ewingii?
Amblyomma americanum
What clinical signs does Ehrlichia ewingii cause in dogs and cats?
Anemia Bleeding Lameness Eye problems Neurologic problems Swollen limbs
What does a Rickettsia rickettsii cause in its hosts?
Fever Anorexia Depression Vomiting Diarrhea Enlarged lymph nodes Anemia Increased liver enzymes
What does Anaplasma marginale cause in cattle?
Pale mucous membranes Icterus Extravascular hemolytic anemia Fever Anorexia Dehydration Depression
What does an Anaplasma platys infection cause in dogs
Thrombocytopenia Mild fever Epistaxis Petechiae Ecchymosis
What does an Anaplasma phagocytophilum infection cause in dogs and cats?
Can be asymptomatic for 1-7 days Vomiting Diarrhea Coughing Labored breathing Lameness Fever Joint pain Anorexia
What causes Ehrlichiosis of canines?
Ehrlichia canis
Ehrlichia canis is found in what cells
Agranulocytes
Monocytes & lymphocytes
What does an Ehrlichia canis infection cause in dogs?
Anorexia Enlarged lymph nodes & spleen Low platelet count Abnormal bleeding Petechiae Death
What tick transmits Ehrlichia canis?
Rhipicephalus sanguineus
Is Ehrlichia canis zoonotic?
No
What causes Ehrlichiosis in dogs, deers and humans?
Ehrlichia chaffeensis
Ehrlichia chaffeensis is found in what cells?
Agranulocytes
Monocytes & lymphocytes
What clinical signs does Ehrlichia chaffeensis cause in dogs?
Can be asymptomatic Depression Lethargy Mild weight loss Anorexia
What clinical signs does Ehrlichia chaffeensis cause in Humans?
Fever GI symptoms Rash DIC Adult respiratory syndrome Seizures Coma
