Rickettsial Parasites Flashcards
Rickettsial Parasites
A group of obligate intracellular gram-negative bacteria
What are three examples of Rickettsial parasites?
Rickettsia rickettsii
Anaplasma spp
Ehrlichia spp
How are Rickettsial species transmitted?
Arthropod or helminth vectors
What are the rickettsial bacteria that spread Rocky Mountain Spotted fever?
Rickettsia rickettsii
What are the hosts of Rocky Mountain Spotted Fever?
Dogs and humans
What are the intermediate hosts of Rocky Mountain Spotted Fever?
Dermacentor spp
Amblyomma spp
Rhipicephalus sanguineus
Can Rocky Mountain Spotted Fever be fatal to humans?
Yes. It must be transmitted through the tick
What is the organism that spreads Infectious Canine Cyclic Thrombocytopenia?
Anaplasma platys
Where are Anaplasma platys found?
The platelets of dogs
What is the intermediate host of Infectious Canine Cyclic Thrombocytopenia?
Rhipicephalus sanguineus (Brown dog Tick)
What Rickettsial organism causes Canine Monocytic Ehrlichiosis?
Ehrlichia canis
Where is Ehrlichia canis found?
The mononuclear cells of canids worldwide
Monocytes and lymphocytes
What is the intermediate host of Ehrlichia canis?
Rhipicephalus sanguineus (Brown dog Tick) Amblyomma americanum (Lone Star Tick)
What Rickettsial organism causes human monocytic ehrlichiosis?
Ehrlichia chaffeensis
Where can Ehrlichia chaffeensis be found?
The monocytic cells of dogs, humans and deer