Ehrlichiosis causes

Ehrlichiosis Microchapters
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Taxonomy

Classifications
Domain	Bacteria
Kingdom	Prokaryote
Phylum	Proteobacteria
Class	Alpha Protobacteria
Order	Rickettsiales
Family	Anaplasmataceae
Genus	Ehrlichia
Species	E. canis E. chaffeensis E. ewingii

Phylogeny

• Small intracellular bacteria
• Infect vacuoles of host eukaryotic cells
• Gram-negative cell wall
• Grow within a host cells endosomes in morulae clusters
• Manipulate the endosomes mechanical function in order to resist lysosomal fusion
• Ehrlichiae exits the cell as morulae attaches to cell wall
• Target cells include neutrophils, platelets, erythrocytes, and endothelium