2.02 Transmitting Infection

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2.02 Transmitting
Infection
Direct contact
Indirect contact
Airborne
Vector-borne
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Direct contact

• Person to person
• Animal to person
• Mother to unborn child

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Indirect contact

• Pathogens are passed along on inanimate objects

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Airborne

• Pathogens are carried through the air
• Cling to surroundings and are spread

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Vector-borne

• Insects carry pathogen from host to host

Flea
Mosquito
Tick
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How you get an infection

• Causative agent
• Reservoir
• Portal of exit
• Mode of transmission
• Portal of entry
• Susceptible host

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• Chain of Infection

Causative agent
Source or reservoir
Susceptible host
Portal of entry
Portal of exit
Mode of transmission
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Causative agent

• pathogen

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Reservoir

• area where the pathogen can live

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Portal of exit

• way for the pathogen to escape from the reservoir

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Mode of transmission

• way for pathogen to be transmitted

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Portal of entry

• way to enter new reservoir

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Susceptible host

• able to be affected
• person likely to get sick

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Remember

• If any part of the chain is eliminated, the
  spread of infection or disease is stopped.