For thousands of years, people have feared a disease that can turn an ordinary animal bite into a race against time. That disease is rabies. Rabies is almost invariably fatal once clinical symptoms appear, but it is preventable when appropriate action is taken promptly after exposure. Thorough wound washing, followed by timely post-exposure treatment with rabies vaccine and, when indicated, rabies immunoglobulin, can prevent the virus from reaching the nervous system. The tragedy is that people continue to die from a disease that modern medicine has known how to prevent for more than a century.
A Disease Older Than Written Medicine
Rabies is one of the oldest diseases known to humanity. Descriptions consistent with rabies can be found in ancient records from different parts of the world, long before anyone understood viruses or the mechanisms of infection. For much of human history, however, there was little that could be done after a bite from a rabid animal. People tried cauterising wounds, applying various substances and relying on traditional remedies. The turning point came in 1885, when Louis Pasteur and his colleagues successfully used an early rabies vaccine to save the life of Joseph Meister, a nine-year-old boy who had been severely bitten by a rabid dog. That remarkable event marked a major milestone in the history of vaccination and demonstrated that a fatal infectious disease could be prevented even after exposure.
More than a century later, the tools for preventing rabies have become much safer and more effective. Yet the disease has not disappeared. The problem is no longer simply discovering how to prevent rabies; it is ensuring that prevention reaches every person who needs it, in time. This makes rabies not only a medical problem, but also a problem of awareness, healthcare access, animal vaccination, poverty and public-health infrastructure.
How a Bite Becomes a Brain Infection
The rabies virus has a remarkable way of reaching the brain. Unlike many infections that spread primarily through the bloodstream, rabies virus enters peripheral nerves near the site of infection and travels towards the spinal cord and brain. The time taken for this journey varies considerably, and the incubation period may range from weeks to months or, more rarely, even longer. This delay creates a crucial window during which appropriate post-exposure treatment can prevent the disease from developing.
The early symptoms of rabies can be deceptively ordinary. A person may initially develop fever, headache, weakness or general discomfort. There may also be pain, tingling or unusual sensations around the site of the previous bite or scratch. As the infection progresses, severe neurological symptoms can appear, including agitation, confusion, hallucinations, difficulty swallowing and paralysis. One of the most characteristic manifestations is hydrophobia, commonly described as fear of water. It is not simply a psychological fear; attempts to swallow can trigger extremely painful spasms of the throat muscles. Once clinical symptoms appear, rabies is almost invariably fatal. This is why rabies is a race against time in which prevention must occur before symptoms begin.
Where the Virus Actually Lives
Although rabies can infect many mammals, including dogs, cats, livestock and wildlife, dogs remain the most important source of human rabies deaths globally. According to the World Health Organization, dogs are responsible for up to 99% of human rabies cases. Vaccinating dogs is therefore one of the most effective ways of preventing human rabies. Instead of waiting for people to be bitten and treated, controlling the infection in the animal population can stop transmission at its source.
Globally, rabies is estimated to cause around 59,000 human deaths every year, although the true burden is uncertain because many cases occur in remote communities and are never formally diagnosed or reported. More than 95% of human deaths occur in Africa and Asia, and children are disproportionately affected. Children may be more likely to approach unfamiliar animals, may not recognise the danger of a bite or scratch, or may fail to tell an adult about an exposure. When healthcare facilities are far away and vaccines are difficult to obtain, a preventable exposure can become a fatal disease.
Why This Is a Poverty Map, Not a Mystery Map
The continued burden of rabies is closely linked to poverty and unequal access to healthcare. In many communities, free-roaming and unvaccinated dogs are common, while veterinary services and mass dog-vaccination programmes may be limited. A person bitten in a remote village may have to travel considerable distances to reach a facility providing rabies vaccination. Rabies immunoglobulin, which is required for certain severe exposures, may also be unavailable. The cost of transportation, treatment and lost working days can become an additional burden for families.
India carries a substantial share of the global rabies burden. With a large population of free-roaming dogs and considerable variation in access to veterinary and medical services, preventing dog-mediated rabies requires coordinated action across communities, local governments, veterinary services and healthcare systems. Rabies prevention is therefore not only about medicine; it is also about making essential services accessible to the people who need them.
A Goal—and Real Progress
The global Zero by 30 initiative aims to end human deaths from dog-mediated rabies by 2030 through coordinated action, including mass dog vaccination, improved access to post-exposure prophylaxis, surveillance and community education. There are encouraging examples showing that elimination is possible. In September 2026, the World Health Organization validated Bhutan for eliminating dog-transmitted human rabies as a public-health problem. Chile subsequently became the first country in South America to receive WHO validation for eliminating dog-transmitted rabies as a public-health problem.
These achievements demonstrate that rabies elimination is not merely a theoretical possibility. Sustained dog vaccination, effective surveillance, public awareness, accessible post-exposure treatment and long-term commitment can dramatically reduce—and ultimately interrupt—transmission.
What Actually Saves a Life
Suppose a dog bites you. The first response should be immediate and simple: wash the wound thoroughly with soap and plenty of running water. Wound cleansing can physically remove virus from the exposure site and is an important component of rabies prevention. After washing the wound, the person should seek medical attention as quickly as possible. A healthcare professional will assess the nature of the exposure and determine whether rabies post-exposure prophylaxis is required. Depending on the type of exposure, this may include rabies vaccine and rabies immunoglobulin.
One of the most dangerous misconceptions is that a bite is harmless if the wound is small. Another is that treatment can be delayed until the animal becomes sick. Do not wait for symptoms. Do not wait to see whether the animal becomes sick. Seek medical attention promptly after a potentially risky bite or scratch. Appropriate post-exposure treatment is highly effective when administered before clinical symptoms develop.
The Dog Is at the Centre of the Solution
Preventing rabies is not simply about what happens after a person is bitten. The most sustainable approach is to prevent the virus from circulating among dogs in the first place. Mass vaccination of dogs, responsible pet ownership, appropriate management of free-roaming dog populations, surveillance and community education form the foundation of successful rabies-control programmes.
A vaccinated dog can protect not only itself, but also the people and animals living around it. When a sufficiently high proportion of dogs in a community are vaccinated, transmission of the virus can be interrupted and human exposure can be dramatically reduced.
One Health: One Problem, Many Solutions
Rabies does not belong exclusively to human medicine or veterinary medicine. Doctors protect and treat people, veterinarians manage animal health and vaccination, public-health authorities conduct surveillance and coordinate control programmes, and communities play a vital role through responsible animal care and early reporting of animal exposures.
This is a classic One Health problem because human health, animal health and the environment are closely connected. No single profession or department can eliminate rabies alone. Effective control requires cooperation among medical professionals, veterinarians, public-health workers, local authorities, animal-welfare organisations and the community.
The Future Is in Our Hands
Rabies teaches us an unusual lesson in medicine. We have a disease that is almost invariably fatal once clinical symptoms appear, but we also have highly effective tools that can prevent that outcome when used promptly. The greatest challenge is not a lack of scientific knowledge; it is ensuring that knowledge, vaccines, veterinary services and healthcare reach every person and every community that needs them.
The story of rabies is ultimately not just a story about a deadly virus. It is a story about the distance between what medicine can achieve and what society can deliver. A vaccine developed more than a century ago can still save a life today, but only if it reaches the person before the virus reaches the brain. A dog vaccinated today can protect an entire community tomorrow. A few minutes spent washing a wound can become the first step in preventing a fatal disease.Rabies may be one of humanity’s oldest fears, but it does not have to remain one of our oldest killers. The science has been with us for more than a century. The challenge now is to make prevention accessible to everyone.
Because when it comes to rabies, the most powerful cure is the one given before the disease has a chance to begin.
Dr. A.Sundar
Assistant Professor, Department of Veterinary Public Health and Epidemiology, Veterinary College and Research Institute, Salem
