Viral Diseases Flashcards

1
Q

Why are measles less of a problem in the UK?

A

better living conditions and a vaccination programme for young children

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2
Q

What are the two symptoms for measles?

A

skin rashes and fever

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3
Q

What should you do if you have measles?

A

isolated to stop the spread

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4
Q

How are measles spread?

A

inhalation of droplets from sneezes and coughs

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5
Q

Describe and explain how HIV leads to aids when antiretroviral drugs are not immediately taken after the infection:

A

HIV causes a mild flu-like illness and after the initial mild illness, it stays hidden inside the immune system until it is severely damaged that it can no longer fight certain cancers and infections- this is when it is knowns as AIDS

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6
Q

How is HIV spread?

A

sexual contact or exchange of body fluids such as blood which occurs when drug users share needles

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7
Q

How can HIV be prevented?

A

condoms, not sharing needled, HIV-positive mothers bottle-feeding their children

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8
Q

What can prevent the development of AIDS?

A

antiretroviral drugs

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9
Q

What plants does TMV affect?

A

tomatoes and tobacco plants

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10
Q

Why might TMV affect the growth of the plant?

A

affected areas of the lead do not photosynthesise

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11
Q

What does TMV cause the plant to have?

A

a ‘mosaic’ pattern of discoloration on the leaves

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12
Q

How is TMV spread?

A

contact between diseased plant material and healthy plants
insects can also act as vectors

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13
Q

How do famers prevent the spread of TMV?

A
  • grow TMV-resistant strains of many crop plants
  • good field hygiene and good pest control
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