In 2004, 15-year-old Jeanna Giese became the first known person to survive symptomatic rabies without prior vaccination.
Her doctors used an experimental treatment strategy that later became known as the Milwaukee Protocol.
The case generated worldwide attention and renewed interest in rabies research.
Despite Jeanna's recovery, the Milwaukee Protocol remains controversial because most subsequent attempts have not achieved similar outcomes.
Rabies remains one of the deadliest infectious diseases in the world, with an almost universal fatality rate once clinical symptoms develop. For centuries, a diagnosis of symptomatic rabies was effectively a death sentence. Once the virus reached the brain and neurological symptoms appeared, physicians could offer little more than supportive care while preparing families for the inevitable outcome.
Even in the twenty-first century, when modern medicine can treat conditions that were once considered hopeless, rabies has remained an exception. The virus attacks the nervous system with devastating efficiency, and survival after symptom onset is extraordinarily rare. For generations, medical students learned a simple rule: prevent rabies before symptoms begin because there is no reliable cure afterward.
However, there was one remarkable exception. In 2004, a teenager from Wisconsin survived symptomatic rabies without having received prior rabies vaccination. Her name was Jeanna Giese, and her recovery would become one of the most remarkable, and controversial, stories in infectious disease medicine.
The story began in September 2004 when Jeanna Giese, then 15 years old, attended a church service in Wisconsin. During the event, she came into contact with a bat that bit her finger. The injury seemed insignificant. There was no severe bleeding, no major wound, and no immediate reason to suspect that the encounter would become life-threatening.
Like many people, Jeanna and her family did not realize that even a small bat bite can transmit rabies. Because the wound appeared minor, she did not receive post-exposure prophylaxis, the combination of rabies vaccination and immunoglobulin that is highly effective when administered promptly after exposure.1
Several weeks later, Jeanna began experiencing fatigue, weakness, and unusual sensations in her arm. Initially, the symptoms resembled a routine viral illness. However, her condition deteriorated rapidly. She developed neurological symptoms, including difficulty speaking, impaired coordination, and episodes of confusion. She was eventually diagnosed with rabies, a disease that was considered almost universally fatal once symptoms appeared.
At the time, there were virtually no documented cases of unvaccinated individuals surviving symptomatic rabies. The prognosis was poor. Yet a team of physicians at Children's Hospital of Wisconsin decided to pursue an experimental approach rather than accept the expected outcome.
Leading the medical team was pediatric infectious disease specialist Dr. Rodney Willoughby. He proposed a bold hypothesis. Rather than attempting to eliminate the virus directly, physicians might protect the brain long enough for the patient's immune system to its own defense.
The treatment strategy involved placing Jeanna into a medically induced coma while administering antiviral medications and intensive supportive care. By reducing brain activity and protecting neural tissue from damage, the team hoped to buy time for her body to develop rabies-neutralizing antibodies.
The idea was unprecedented. There was little evidence to suggest that such an approach would work, and many experts viewed it as an extraordinary gamble. Nevertheless, given the otherwise fatal outlook, the medical team proceeded.
It was a bold idea that had never been tried before. Days passed, then weeks. Gradually, laboratory tests showed evidence that Jeanna's immune system was responding to the virus. Against all expectations, her condition stabilized.
After being brought out of the induced coma, she began a long and difficult rehabilitation process. She initially struggled with speech, movement, and coordination. However, through intensive therapy, she regained many of her lost abilities and eventually returned to school.
News of her survival spread rapidly through the medical community and international media. For the first time, physicians had documented a case in which an unvaccinated patient survived symptomatic rabies. The achievement was hailed by some as a historic breakthrough and by others as a medical mystery.2
More than two decades later, scientists still debate exactly why Jeanna survived.
One theory suggests that she was infected with a bat-associated rabies variant that may have been less aggressive than strains commonly transmitted by dogs. Another possibility is that her immune system mounted an unusually rapid and effective antibody response before irreversible brain damage occurred.
Some researchers argue that the Milwaukee Protocol played a decisive role by protecting the brain while the immune response developed. Others believe that Jeanna's recovery may have occurred despite the protocol rather than because of it.3
The reality is that her survival was likely influenced by multiple factors, including the viral strain, host immune response, age, overall health, and the intensive medical care she received.
Following Jeanna's recovery, hospitals around the world attempted to replicate the Milwaukee Protocol in other patients with rabies. Expectations were high. If the treatment could be reproduced successfully, it might transform one of medicine's deadliest diseases into a survivable condition.
Unfortunately, the results were disappointing.
Most patients treated with modified versions of the protocol did not survive. Reviews of subsequent cases found inconsistent outcomes and little evidence that the protocol alone could reliably alter the course of the disease.3
Today, many infectious disease specialists regard the Milwaukee Protocol with caution. While it remains an important chapter in medical history, it is no longer widely viewed as a proven treatment for symptomatic rabies.
Jeanna Giese's story is often described as a miracle of modern medicine. Yet the most important lesson from her case is not that rabies can be cured, it is that rabies can almost always be prevented.
Post-exposure prophylaxis remains one of the most effective interventions in infectious disease medicine. When administered promptly after exposure, rabies vaccination and immunoglobulin can prevent the virus from reaching the nervous system and causing disease.
In contrast, once symptoms appear, survival remains exceptionally rare.
The survival of Jeanna Giese challenged a medical assumption that had stood for generations. Her case demonstrated that recovery from symptomatic rabies was possible, even if only under extraordinary circumstances. At the same time, it highlighted how much remains unknown about the disease and its interaction with the human immune system.
More than twenty years later, her story continues to fascinate physicians, researchers, and the public alike. It is a story of scientific courage, clinical uncertainty, and the remarkable resilience of the human body. Above all, it serves as a reminder that while medicine occasionally achieves the unexpected, preventing infection before symptoms develop remains the most effective way to combat rabies.
Gale, Jen. “Who Was the Girl Who Lived Through Rabies?” Institute for Education, Research and Engagement (IERE). Accessed August 6, 2026.
Bates, Mary. “Surviving Rabies Is Now Possible.” American Association for the Advancement of Science (AAAS). Accessed August 6, 2026.
Alan C. Jackson, “Demise of the Milwaukee Protocol for Rabies,” Clinical Infectious Diseases 81, no. 4 (2025): e229–e232
