Transmission and Spread of Infection Flashcards

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1
Q

What are the six parts to a chain of infection?

A

Infectious agent

Reservoir

Portal of exit

Mode of transmission

Portal of entry

Susceptible host

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2
Q

What are the two broad categories of transmission?

A

Direct transmission

Indirect transmission

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3
Q

Give three ways direct transmission can occur.

A

Contact with person

Infected droplets

Vertical transmission - across placenta

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4
Q

Give four ways indirect transmission can occur.

A

Contact with contaminated surfaces

Consumption of contaminated food/water

Injection/penetration of skin

Bite

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5
Q

What is a healthcare associated infection?

A

An infection contracted while a person is in a health-care facility

It must appear 48 hours or more after admission to facility

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6
Q

What are the four most common groups of health care associated infections?

A

Urinary tract infections

Surgical site infections

Bloodstream infections

Pneumonia

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7
Q

What are the four main contributing factors in HCAI?

A

Invasive medical procedures bypass the body’s natural protective barriers

Increased numbers of compromised hosts

Increased number of antibiotic resistant pathogens

Failure in infection control facilities and policies

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