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What are the symptoms of hantavirus?

Symptoms of hantavirus infection often begin with fever, fatigue, muscle aches, headaches, and chills, sometimes accompanied by nausea or abdominal pain. In hantavirus pulmonary syndrome (HPS), the illness can rapidly progress to coughing and severe shortness of breath as fluid accumulates in the lungs. In hemorrhagic fever with renal syndrome (HFRS), symptoms may also include low blood pressure, bleeding problems, and kidney dysfunction. Because early symptoms resemble those of influenza, hantavirus infections can be difficult to recognize in their initial stages.