Which of the following is NOT listed as a symptom of Seoul virus infection?

• A. Fever
• B. Headache
• C. Cough
• D. Nausea

Answer: (C)

Seoul virus infection is a hantavirus illness that typically presents with fever, severe headache, malaise, myalgias, and abdominal or back pain, often with nausea and vomiting; renal involvement can follow. Respiratory symptoms like cough are not part of its usual presentation. A cough is more associated with hantavirus pulmonary syndrome caused by other hantaviruses, not with Seoul virus’s hemorrhagic fever with renal syndrome type picture. Therefore, among the listed symptoms, cough is not a common or listed symptom for Seoul virus infection, while fever, headache, and nausea are.