A 41-year-old man with a history of thymoma resection was admitted to the hospital with a 3-week history of generalized body aches and fever during late summer. He also reported severe headache for 1 week and photophobia for 3 weeks. He denied any recent travel, sick contacts, insect bites, rash, muscle weakness, or neck stiffness. He reported dizziness and blurred and double vision, and was noted to have an unsteady gait 1 day prior to hospital admission.
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