Hantavirus infection is a rare but serious disease transmitted mainly through contact with infected rodent urine, droppings, or saliva. Symptoms usually manifest within two to three weeks after exposure, starting with mild signs like fatigue, fever, and body aches, which can be mistaken for common viral illnesses. However, the situation can deteriorate rapidly, leading to severe respiratory issues and potentially life-threatening conditions such as cardiopulmonary syndrome. Dr. J. Kirtana, an Associate Consultant in Infectious Diseases, emphasizes the importance of early recognition and treatment, especially for those exposed to rodent-infested environments. Severe strains, such as the Sin Nombre virus and Andes virus, have a high progression rate to severe disease, with 60-80% of symptomatic infections potentially leading to serious complications. In addition, kidney problems may arise, necessitating close monitoring and possibly dialysis. Although there is no specific cure for hantavirus, timely medical intervention can significantly improve outcomes and reduce the risk of critical complications.