Hantaviruses are a group of viruses that spread to humans through exposure to rodents. People typically develop hantavirus infection from exposure to the infected urine, saliva, or droppings of rodents, usually rats and mice. In the western hemisphere (including the US), hantavirus can cause hantavirus pulmonary syndrome. Patients initially have flu-like symptoms including fever, chills, fatigue, muscle aches, and headache. Primarily in Europe and Asia, hantavirus can lead to hemorrhagic fever with renal syndrome. ➡️ Learn more about the hantavirus infection and the syndromes it can cause, as well as treatment options and prevention measures, in this JAMA Patient Page: ja.ma/3Hlh41W