
A 77-year-old man is brought to the emergency department after severaldays of illness that began with fever, nausea, emesis, and headache. Muscleweakness and associated myalgia developed; the weakness became so severethat the patient needed help to get out of bed and walk to the bathroom.The day before he came to the hospital, he slept much of the time and wasdifficult to arouse.
























































































































































































































































































































