The rabies virus is a deadly virus that primarily affects mammals, including humans. It is usually transmitted through the bite of an infected animal, such as a dog or bat. Once inside the body, the virus travels along the nerves to the brain, where it can cause severe inflammation and neurological symptoms. Symptoms of rabies can include fever, confusion, and paralysis, often leading to death if not treated promptly. Vaccination is crucial for prevention, especially for those at higher risk, such as veterinarians and animal handlers. Post-exposure prophylaxis can effectively prevent the onset of the disease if administered soon after exposure.