Zoonotic Diseases

Visão Geral

Some diseases do not stay inside the species they start in. A sick goat can pass its illness to the farmer who milks it; a dog with rabies can pass its infection to the child it bites; a cow with tuberculosis can pass the bacteria to the family that drinks its unboiled milk. Diseases that cross this way, from animal to human, are called zoonotic diseases, and they turn animal health from a farm concern into a public health one.

In this lesson you will learn what makes a disease zoonotic, meet the zoonoses that matter most on Nigerian farms, trace the specific routes by which each one reaches a human host, and learn the everyday precautions that close those routes. You will also see why this topic reaches far beyond the farm gate, to abattoir workers, veterinarians and the general public who never touch a live animal at all.

Objetivos

  1. Define zoonotic diseases
  2. Give examples of zoonotic diseases common in Nigeria
  3. Explain how zoonotic diseases are transmitted from animals to man
  4. State the precautions taken to prevent zoonotic disease transmission
  5. Explain the public health importance of zoonotic diseases

Nota de Aula

A butcher in Kano skins a cow that died overnight, undiagnosed, with a small cut on his hand. Three days later he is gravely ill: the cow had died of anthrax, and the bacteria entered through the cut. Understanding zoonotic diseases protects every farmer, trader and household that keeps livestock.

Avaliação da Lição

Parabéns por concluir a lição em Zoonotic Diseases. Agora que você explorou o conceitos e ideias-chave, é hora de colocar seu conhecimento à prova. Esta seção oferece uma variedade de práticas perguntas destinadas a reforçar sua compreensão e ajudá-lo a avaliar sua compreensão do material.

Irá encontrar uma mistura de tipos de perguntas, incluindo perguntas de escolha múltipla, perguntas de resposta curta e perguntas de redação. Cada pergunta é cuidadosamente elaborada para avaliar diferentes aspetos do seu conhecimento e competências de pensamento crítico.

Use esta secção de avaliação como uma oportunidade para reforçar a tua compreensão do tema e identificar quaisquer áreas onde possas precisar de estudo adicional. Não te deixes desencorajar pelos desafios que encontrares; em vez disso, vê-os como oportunidades de crescimento e melhoria.

  1. A zoonotic disease is best defined as a disease that is: A. Found only in wild animals B. Naturally transmissible from animals to humans C. Passed from one human to another D. Caused only by poor nutrition Answer: B
  2. Which of the following is caused by a virus? A. Anthrax B. Brucellosis C. Rabies D. Ringworm Answer: C
  3. Bovine tuberculosis is most commonly transmitted to humans through: A. Tick bites B. Unpasteurised milk and infected meat C. Airborne dust in poultry houses D. Contact with dog saliva Answer: B
  4. Which precaution chiefly protects a person handling a carcass from direct-contact zoonoses such as anthrax? A. Boiling drinking water B. Wearing protective clothing and gloves C. Vaccinating poultry D. Improving housing ventilation Answer: B
  5. Which of these is generally regarded as a milder, common zoonosis spread by skin contact with an infected animal? A. Rabies B. Anthrax C. Avian influenza D. Ringworm Answer: D

Perguntas Anteriores

Pergunta-se como são as perguntas anteriores sobre este tópico? Aqui estão várias perguntas sobre Zoonotic Diseases de anos passados.

Pergunta 1 Relatório

(a) Discuss anthrax disease under the following headings:

  • causative organisms
  • two modes of transmission;

 

(b) Draw and label the reproductive tract of a hen.  [6 marks]