Rabies

DEFINITION

Rabies is a deadly virus spread to people from the saliva of infected animals. The rabies virus is usually transmitted through a bite.

Animals most likely to transmit rabies in the United States include bats, coyotes, foxes, raccoons and skunks. In developing countries of Africa and Southeast Asia, stray dogs are the most likely to spread rabies to people.

Once a person begins showing signs and symptoms of rabies, the disease is nearly always fatal. For this reason, anyone who may have a risk of contracting rabies should receive rabies vaccines for protection.

CAUSES

Rabies infection is caused by the rabies virus. The virus is spread through the saliva of infected animals. Infected animals can spread the virus by biting another animal or a person. In rare cases, rabies can be spread when infected saliva gets into an open wound or the mucous membranes, such as the mouth or eyes. This could occur if an infected animal were to lick an open cut on your skin.

Animals that can transmit the rabies virus

Any mammal (an animal that suckles its young) can transmit the rabies virus. The animals most likely to transmit the rabies virus to people include:

Pets and farm animals

  • Cats
  • Cows
  • Dogs
  • Ferrets
  • Goats
  • Horses



Wild animals

  • Bats
  • Beavers
  • Coyotes
  • Foxes
  • Monkeys
  • Raccoons
  • Skunks



In rare cases, the virus has been transmitted to tissue and organ transplant recipients from an infected organ.

SYMPTOMS

The first symptoms of rabies may be very similar to the flu and may last for days. Signs and symptoms may include:

  • Fever
  • Headache
  • Nausea
  • Vomiting
  • Agitation
  • Anxiety
  • Confusion
  • Hyperactivity
  • Difficulty swallowing
  • Excessive salivation
  • Fear of water (hydrophobia) because of the difficulty in swallowing
  • Hallucinations
  • Insomnia
  • Partial paralysis



When to see a doctor

Seek immediate medical care if you’re bitten by any animal. Based on your injuries and the situation in which the bite occurred, you and your doctor can decide whether you should receive treatment to prevent rabies.

Even if you aren’t sure whether you’ve been bitten, seek medical attention. For instance, a bat that flies into your room while you’re sleeping may bite you without waking you. If you awake to find a bat in your room, assume you’ve been bitten. Also, if you find a bat near a person who can’t report a bite, such as a small child or a person with a disability, assume that person has been bitten.