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Rickettsia - is the agent of epidemic typhus During World...

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Rickettsia ORGANISM: Genus: Rickettsia , Rochalimaea , Coxiella Species: Rickettsia prowazekii (epidemic typhus), Rickettsia typhi (endemic typhus), Rickettsia rickettsii (spotted fever), Rochalimaea quintana (trench fever), Coxiella burnetii (Q fever) GENERAL CONCEPTS: The Rickettsia are Gram-negative, obligate intracellular bacteria that infect mammals and arthropods. R. prowazekii
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Unformatted text preview: is the agent of epidemic typhus. During World War I, approximately 3 million deaths resulted from infection by this bacterium. In World War II, the numbers were similar. This agent is carried by the human louse; therefore, disease is a consequence of overcrowding and poor hygiene. • Rocky Mountain spotted fever and Q fever remain relatively common....
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