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Flashcards · Biology · Health and Infectious Disease

How Diseases Spread and Are Prevented

16 cards

  1. How is cholera spread?

    In water that has been contaminated with sewage.

  2. Name two ways of preventing cholera.

    Clean drinking water and sewage treatment, or hand washing.

  3. How is TB spread?

    In droplets in the air from coughs and sneezes.

  4. Name two ways of reducing the spread of TB.

    Isolating infected people, ventilation, vaccination or treatment.

  5. How is Chalara ash dieback spread?

    By airborne spores, and on imported trees.

  6. How can the spread of ash dieback be slowed?

    Controlling imports, and destroying infected trees.

  7. What is a vector?

    An organism that carries a pathogen from one host to another.

  8. What is the vector for malaria?

    The female Anopheles mosquito.

  9. Name two ways of preventing malaria.

    Mosquito nets, killing mosquitoes or draining standing water.

  10. Why are insecticide-treated nets effective?

    They stop mosquitoes biting at night, and kill mosquitoes that land on them.

  11. Why does draining standing water help?

    Mosquitoes breed in water, so there are fewer of them.

  12. Why is TB spread more where there is overcrowding?

    There are more people to breathe in the infected droplets.

  13. What does the BCG vaccine protect against?

    Tuberculosis.

  14. Who showed that cholera spread through water in 1854?

    John Snow.

  15. Why does treating infected people reduce spread?

    They have fewer pathogens to pass on, so they are less likely to infect others.

  16. Common mistake about malaria?

    Saying that mosquitoes cause malaria. They carry the protist that causes it.