5.4 Viral diseases Flashcards

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1
Q

Virus

A

-regular shape
-smaller than bacteria
-need host cells
-take over cells in body
-live and reproduce inside them destroying them

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2
Q

Measles

A

-can cause brain damage
-Spread by droplet infection
-can be vaccinated against

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3
Q

Tobacco mosaic virus

A

-spread by contact and vectors
-is a plant disease

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4
Q

HIV

A

-no vaccine against it
-spread by transfer of sexual fluid
-works by damaging immune system

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5
Q

Measles spread by

A

droplet infection

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6
Q

Way to reduce measles

A

-isolate infected person
-vaccination program for children
-causes blindness and brain damage
-high temp
-red sore eyes

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7
Q

Symptoms measles

A

-fever
-red skin rash

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8
Q

Measles treatment

A

none

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9
Q

HIV/AIDS way spread

A

-direct sexual contact
-exchange of body fluids(blood)
-mother to child breast milk

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10
Q

HIV/AIDS reduce spread

A

-using condoms
-not using same needles
-screening blood used for transfusions
-HIV pos mothers bottle feed babies

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11
Q

HIV/AIDS symptoms

A

-develops into AIDS
-attacks immune cells
-mild flu like illness to being with 2-6 weeks

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12
Q

HIV/AIDS treatment

A

-antiretroviral medication

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13
Q

Tobacco Mosaic Virus way spread

A

-insects act like vectors
-contact between diseased plant material and healthy plant

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14
Q

Tobacco Mosaic Virus reduce spread

A

-good field hygiene
-good pest control
-remove decaying leaves

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15
Q

Tobacco Mosaic Virus symptoms

A

-‘mosaic’ pattern on leaves
-affected areas don’t photosynthesise

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16
Q

Tobacco Mosaic Virus treatment

A

-no treatment

17
Q

What is a vector?

A

A carrier