Infantile diarrhea and traveler’s diarrhea are commonly caused by ()
A. Escherichia coli
B. Treponema pallidum
Clostridium botulinum
D. Listeria monocytogenes
E. none of the above
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"Shigellosis is common in travelers to developing countries. Infection is commonly acquired through the" ()
A. Skin
B. Gastrointestinal tract
C. Respiratory tract
D. Genital tract
E. none of the above
Virulence factors of Vibrio cholera exclude ()
A. flagella
B. pili
C. exotoxin
D. endotoxin
E. none of the above
The important condition of C.tetani infection is ()
A. no immunity
B. vegetatives of
C. tetani contaminate wound
D. anaerobic microenvironment
E. dysbacteriosis
F. none of the above
What is the pathogenesis of tetanospasmin? ()
A. blocking the release of inhibitory interneurons
B. enhance the release of inhibitory neurons
C. injure ganglion of spinal cord
D. injure motor neuron of spinal cord
E. none of the above
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