Which of the following is a listed symptom of Seoul virus infection?

• A. Fever
• B. Cough
• C. Dizziness
• D. Joint pain

Answer: (A)

Recognizing fever as a typical presenting symptom of Seoul virus infection. Seoul virus is a hantavirus carried by rats, and in humans it commonly causes a febrile illness that can resemble other viral syndromes, with abrupt onset of fever accompanied by malaise, myalgias, and headache, and it may progress to renal involvement. While cough, dizziness, or joint pain can occur, fever is the most consistently reported and characteristic early symptom in this infection. Thus fever is the best-listed symptom among the options.