spreading pathogens Flashcards

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1
Q

why do pathogens spread from one host to another?

A

they can’t grow outside their host

increase in numbers

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2
Q

how are they spread?

A

through the air from coughs and sneezes

or

water e.g cholera

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3
Q

why are diseases such as cholera, typoid and dysentry very rare in developed countries and occur more in less developed countries?

A

developed:

water is treated - kills pathogens

good hygeine

less developed:

good hygeine is difficult to maintain

major environmental diasters

contaminated water sources

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4
Q

what is the name for when a pathogen spreads through the digestive system and food?

A

oral route

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5
Q

how does ebola enter the body?

A

through broken skin, eyes, nose or mouth

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6
Q

why did ebola become an epidemic?

A

people got infected when burying those who died from ebola

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7
Q

what is the best way to avoid ebola virus infection and why?

A

wearing full body protection

virus is present in all body fluids of infected people even after death

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8
Q

how is the malaria protist spread?

A

it is carried in the blood by mosquitoes that sucked blood from an infected person

mosquito injects protist directly into the blood of the next person it feeds on

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9
Q

what do you call and organism that carries pathogens from one person to the next?

A

vectors of disease

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