Hemorrhagic Fever With Renal Syndrome (HFRS) is a viral infection caused by Hantaviruses, primarily transmitted through contact with infected rodents or their droppings. Symptoms typically include fever, headache, abdominal pain, and bleeding, which can lead to kidney damage and failure in severe cases. Diagnosis is based on clinical symptoms and laboratory tests that detect the virus or antibodies. Treatment focuses on supportive care, including hydration and managing complications. Preventive measures involve reducing rodent populations and avoiding contact with potentially contaminated materials.