A 32-Year-Old Man Is Brought to the Emergency Department Due

A 32-year-old man is brought to the emergency department due to fever, agitation, and disorientation.  According to his family, the patient has been acting strangely and seeing and hearing things that do not exist.  He also drools excessively and has severe, painful throat spasms when he attempts to eat or drink.  The patient returned 4 weeks ago from a camping trip in New Mexico.  Physical examination shows a confused and combative patient with mydriasis and neck rigidity.  Which of the following acts as an entry receptor for the causative agent of this patient's condition?

A) B-lymphocyte CD21
B) Muscle acetylcholine receptors
C) Nasopharyngeal intracellular adhesion molecule-1
D) Respiratory epithelial sialic acids
E) Vascular endothelial integrins

Correct Answer:

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