Communicable Diseases Flashcards

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1
Q

What is communicable diseases?

A

a disease that can be transferred between organisms e.g. HIV

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2
Q

What is a pathogen?

A

an organism that causes disease e.g. bacteria, viruses, fungi, protocticia

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3
Q

What is direct transmission?

A

when a disease is passed directly between organisms e.g. sexual intercourse, sharing needles, droplet infection, coughing sneezing

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4
Q

What is indirect transmission?

A

when a disease is passed on via an intermediate

e.g. human -> food / drink -> human OR human -> mosquito -> human

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5
Q

What is a vector?

A

an organism that transfers a pathogen between organisms

e.g. mosquito transfers malaria protocisita between humans

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6
Q

What are examples of communicable diseases in bacteria?

A
tuberculosis (TB) - 
animals: direct = droplet
humans: indirect = air
badgers
cows

bacterial menigitis - humans: direct = droplet
ring rot -> potatoes direct = contact
tomatoes indirect = machinery

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7
Q

What are examples of communicable diseases in viruses?

A

HIV (Aids) -> Humans: direct = sex

Influenza (flu) -> Animals direct = droplet

Tobacco Mosaic Virus -> Tobacco Plant direct = contact

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8
Q

What are examples of communicable diseases in protoctista?

A

malaria - animals -> indirect = mosquito vector

potato / tomato late blight -> plants -> indirect = spores in air / wind

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9
Q

What are examples of communicable diseases in fungi?

A

black sigatoka -> bananas -> direct = contact
indirect = plant -> spore - > plant

ring worm -> cattle (cows)
direct = contact indirect = cow -> soil -> cow

athletes foot -> humans
direct = contact
indirect = foot -> shower -> foot

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