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Rabies is a serious viral disease that affects the nervous system of humans and animals. It is usually transmitted through the saliva of an infected animal, most commonly through a bite or scratch. Although rabies is almost always fatal after clinical symptoms develop, rabies is preventable when treatment begins promptly after exposure.
What Is Rabies?
Rabies is a zoonotic viral infection caused by rabies virus. Dogs are responsible for the vast majority of human rabies transmissions worldwide. However, other infected mammals, including bats and certain wild animals, can also spread the virus.
The virus enters the body through broken skin or mucous membranes and can travel through peripheral nerves toward the brain and spinal cord. Once symptoms appear, the disease is considered virtually 100% fatal.
How Is Rabies Spread?
Rabies spreads mainly through the saliva of an infected animal. Common routes include:
- Animal bites
- Scratches that break the skin
- Saliva contacting broken skin
- Saliva contacting the eyes, mouth, or other mucous membranes
Dog bites and scratches account for about 99% of human rabies cases globally.
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Rabies Symptoms
The rabies incubation period commonly lasts two to three months, although it can range from about one week to one year. Early symptoms may include fever, pain, weakness, and unusual tingling or burning around the wound.
As the infection progresses, symptoms can include:
- Anxiety and confusion
- Agitation or unusual behavior
- Difficulty swallowing
- Fear of water, known as hydrophobia
- Hallucinations
- Muscle weakness or paralysis
- Seizures
Once neurological symptoms develop, rabies usually progresses rapidly and is fatal. Therefore, prevention after an exposure is critical.
What to Do After an Animal Bite
If you are bitten or scratched by an animal that could have rabies, do not wait for symptoms.
Immediately wash and flush the wound thoroughly with soap and running water for at least 15 minutes. Then seek urgent medical care for a professional exposure assessment and possible rabies post-exposure prophylaxis (PEP).
PEP may include rabies vaccination and, for certain severe exposures, rabies immunoglobulin. When given appropriately and promptly, PEP is highly effective at preventing rabies after exposure.
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How Can Rabies Be Prevented?
The best way to prevent rabies is to reduce exposure and control the disease in animals. Important prevention measures include:
- Vaccinating dogs and other pets as recommended
- Avoiding contact with unfamiliar or wild animals
- Teaching children how to safely interact with animals
- Seeking medical attention immediately after a suspected exposure
- Following the recommended rabies vaccine schedule after exposure
Mass dog vaccination is one of the most effective strategies for preventing human rabies because it stops transmission at its primary source.
Final Thoughts
Rabies is a life-threatening disease, but rabies deaths are preventable. Prompt wound washing, professional medical assessment, and appropriate post-exposure treatment can prevent infection before symptoms begin. If you have experienced a potentially risky animal bite or scratch, seek medical care immediately rather than waiting for symptoms.
This article is for educational purposes and does not replace professional medical advice.
