Lesson 2: Viral diseases Flashcards

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1
Q

What type of disease is measles?

A
  • Measles is a viral disease.
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2
Q

What are the symptons of measles?

A
  • Fever
  • Red Skin
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3
Q

How is measles spread/ how can we prevent spread?

A
  • Measles virus is spread by inhalation of droplets from sneazes and coughs.
  • Most children are vaccinated at a young age.
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4
Q

Why are most children vaccinated against measles at a young age?

A
  • Measles is a serious illness that can be fatal if complications arise.
  • ie. damage to breathing system and brain - don’t need to know
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5
Q

How is HIV spread/ how can it be prevented?

A
  • Sexual contact
  • Exchange of body fluids such as blood which occurs when drug- users share needles.
  • Use protection ie. condoms
  • Use clean needles.
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6
Q

What is the main sympton of HIV?

A
  • Flu- like illness.
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7
Q

What happens when HIV enters the body?

A
  • HIV attacks the body’s immune cells.
  • Late stage HIV infection/ aids occurs when the body’s immune system is so badly damaged.
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8
Q

What happens when the body’s immune system becomes badly damaged?

A
  • It won’t be able to deal with other infections ie. cancer.
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9
Q

What is the main treatment for HIV?

A
  • Antiretroviral drugs.
  • Makes sure the virus doesn’t damage the patient’s immune system.
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10
Q

What is the main difference between viruses and bacteria?

A
  • Viruses cannot be treated with antibiotics.
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11
Q

What is TMV?

A
  • A widespread pathogen, affecting many species of plants - including tomatoes.
  • It gives a distinct “mosaic” pattern of discolouration on the leaves.
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12
Q

What is the result of the discolouration of leaves due to TMV?

A
  • Rate of photosynthesis is reduced.
  • Growth of the plant is reduced.
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