Researchers have identified the cause of a Kansas farmer's mysterious death this summer as Bourbon virus.

Thought to be transmitted by ticks, the virus "was fast-moving and severe, causing lung and kidney failure, and shock," The New York Times reported, killing the previously healthy man after only 10 days in the hospital.

Together, Centers for Disease Control and Prevention (CDC) and University of Kansas Hospital researchers identified the virus as a thogotovirus, part of a larger type of viruses called orthomyxoviruses, Dana Hawkinson, M.D., an infectious disease specialist at The University of Kansas Hospital said in the video statement above.

Bourbon virus, named after Bourbon County, Kansas, where the only known patient lived, is similar to viruses seen previously in Eastern Europe, Africa and Asia, said Hawkinson, but nothing like it had ever been identified in the Western Hemisphere before.

He called the experience of working with a never-before-seen virus frustrating, as the lack of understanding of the illness left many questions unanswered for both the patient's family and the researchers. "We don't know the full spectrum of disease because it's the first case," he said. For example, no one knows whether or not the disease is usually deadly or if there could be more mild cases from which future patients could recover.

Symptoms include fever, loss of appetite, muscle aches and a general feeling of malaise. But while similar tick-borne illnesses typically are treated with antibiotics, this disease is transmitted by a virus, and therefore won't respond to the medication. Indeed, the Kansas patient did not respond to traditional therapies after testing negative for typical tick-borne diseases at the University of Kansas Hospital, New York Daily News reported.