Directorate Communnication

Rabies
a killer disease

Jenny Turton


Rabies

What is rabies?

  • Rabies is a zoonotic disease (a disease which people can get from animals)

     

  • It is caused by a virus which affects the brain and causes death

     

  • The virus is shed in saliva and is spread by the bite of an infected animal

     

 

 

 

Rabies is a very dangerous disease. Vaccinate your animals and protect yourself!

Animals which can infect people

  • Usually dogs

     

  • Other animals which can infect people are cats, mongooses, jackals and other wild animals

     

  • Rabies is spread to other animals and people mainly by dogs, black-backed jackals, yellow mongooses and bat-eared foxes

     

Signs of the disease in animals

  • Changes in behaviour occur in all animals. Domestic animals can become wild and aggressive (they appear to be mad), while wild animals may become tame

     

  • Paralysis eventually occurs, resulting in death
Distribution of rabies, showing which animals are important for the spread of rabies in each region

Dogs: aggression, howling, attacking without warning, salivation, biting at imaginary flies, fixed stare, wandering aimlessly, dropped lower jaw, inabililty to swallow, eating soil and sticks, choking, vomiting, difficulty in walking, paralysis Cats: become very aggressive and attack without any prior warning signs Cows:bellowing, salivation, choking, aggression, wind-sucking, inability to swallow, weakness, knuckling over of feet, difficulty in walking, paralysis Horses: aimless staggering, inability to swallow, difficulty in walking, weakness, paralysis, aggression, biting
Donkeys: biting, aggression Goats and sheep: bleating, hind-leg weakness, difficulty in walking, aggression, excessive sexual activity, paddling Wild animals: appear tame, enter homes and gardens, night animals seen during the day, attack people and objects without any prior warning signs, paralysis Pigs: aggression, bite savagely

 


How are people infected?
  • People are infected when they get bitten by an infected animal because the virus is spread in the saliva
  • It is possible for people to be infected by saliva through contamination of cuts, the mouth or eyes
  • Animals with rabies may appear to have something stuck in the throat as they salivate excessively. You should take care not to place your hands inside the mouth, because you can contract the disease if you get bitten or cuts on your hands are exposed to saliva
  • Infected carcasses of cattle, sheep, goats, horses and donkeys may be a health threat if these are cut open, because it is possible for people to be infected through cuts or by splashes of brain or saliva into the eyes or mouth when cutting open the skull and handling the brain of an infected animal

Signs of the disease in people

  • In people, the first signs of disease are headaches, anxiety, fever, vomiting and fear of water. Finally, paralysis, coma and death results
  • It normally takes 2 to 10 weeks for people and animals to show signs of the disease after being bitten by an infected animal
  • Once people or animals actually show signs of rabies no treatment is possible and they will die
Prevention
  • It is very important that dogs and cats are vaccinated to reduce the risk to people and animals
  • Young animals should be vaccinated twice in the first year and then every 3 years, or as often as required by your state veterinary authorities. The vaccine is safe and will not make your animals sick
  • Notify your state veterinarian immediately if you see animals acting strangely and rabies is suspected
  • Do not handle, or go near, strange animals, wild animals that seem tame and do not run away from you, sick animals that are not properly restrained or animals that appear aggressive

Treatment
  • If you get treated in time (as soon as possible after the bite) you will not die from rabies
  • If bitten, you should quickly wash the wounds well, using soap or a disinfectant if possible. Then seek medical attention immediately from the nearest clinic or doctor
  • The doctor or nurse will start a course of injections, which can prevent rabies developing. It is very important that you continue going to the clinic until the course is completed, because you can die if you do not get all the injections
  • The recommended vaccination programme at present is to give the first injection on the day you are bitten, and the others 3, 7, 14 and 28 days later
  • A rabies antiserum injection will also be given on the day you are bitten

  • You should notify the state veterinarian or police when you are bitten by a dog or other animal. They will then investigate and if necessary destroy the animal making sure it is tested for rabies

For further information contact your animal health technician, state veterinarian, doctor or nurse

or
Animal Health for Developing Farmers
,
ARC-Onderstepoort Veterinary Institute,
Private Bag X05, Onderstepoort 0110
Tel. (012) 529 9158

Map by G Bishop
Diagrams on pp. 5-8 by C D Seegers


2000
Compiled by Directorate Communication, National Department of Agriculture in cooperation with ARC-Onderstepoort Veterinary Institute

Printed and published by National Department of Agriculture and obtainable from Resource Centre, Directorate Communication, Private Bag X144, Pretoria 0001, South Africa