Hantavirus is a type of virus primarily spread through contact with rodent droppings, urine, or saliva. It can cause serious respiratory illnesses in humans, known as Hantavirus Pulmonary Syndrome (HPS). The virus is typically found in rural areas where rodents, especially deer mice, are common. Symptoms of hantavirus infection may include fever, muscle aches, and fatigue, which can progress to severe breathing difficulties. Preventive measures include avoiding contact with rodents and their droppings, as well as maintaining clean living environments to reduce rodent populations.