Rickettsia rickettsii are readily phagocytized by macrophages.Why doesn't this control the infection and prevent the development of Rocky Mountain spotted fever?
A. The bacteria are toxic for T cells and prevent the development of cell-mediated immunity.
B. The bacteria escape from the phagosome and reproduce in the cytoplasm of the phagocyte.
C. The bacteria interfere with the development of antibodies.
D. The bacteria are unable to inactivate complement.
Answer: B
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