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*Cause systemic diseases in animals
 
*Cause systemic diseases in animals
 
*Usually use arthropod vectors
 
*Usually use arthropod vectors
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*Host and cell type specificity
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*Q fever and Rocky Mountain spotted fever are zoonoses
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*Require live cells for culture such as tissue culture cells or embryonated eggs
 
*Require live cells for culture such as tissue culture cells or embryonated eggs
 
*Require Romanowsky stains  
 
*Require Romanowsky stains  
*Host and cell type specificity
+
 
 
*Include two families, ''Rickettsiaceae'' and ''Anaplasmataceae''
 
*Include two families, ''Rickettsiaceae'' and ''Anaplasmataceae''
 
*''Rickettsiaceae'' have cell walls that contain peptidoglycan; they target endothelial cells and leukocytes
 
*''Rickettsiaceae'' have cell walls that contain peptidoglycan; they target endothelial cells and leukocytes
 
*''Anaplasmataceae'' lack cell walls; they target erythrocytes
 
*''Anaplasmataceae'' lack cell walls; they target erythrocytes
*Q fever and Rocky Mountain spotted fever are zoonoses
       
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