Transmission-Based Precautions
Chain of Infection
Stages of Infection
Personal Protective Equipment (PPE)
Hand Hygiene
100

Precaution that necessitates the use of a negative-pressure room and an N95 respirator. 

What is Airborne Precautions?

100

Bacteria, viruses, fungi, and parasites.

What are Infectious Agents?

100

Recovery from infection.

What is the Convalescent Period?

100

Equipment and supplies necessary to minimize or prevent exposure to infectious material.

What is Personal Protective Equipment (PPE)?

100

Plain soap and water, antiseptic hand rubs, or surgical hand antisepsis. 

What is Hand Hygiene?

200

Precaution that necessitates the use of gloves and a gown.

What is Contact Precautions?

200

Natural habitat of the organism.

What is a Reservoir? 

200

Person is most infectious and unaware of being contagious. 

What is the Prodromal Stage?

200

Not a substitute for hand hygiene.

What are Gloves?
200

The length of time hands must be scrubbed for.

What is 20 Seconds?

300

Precaution that necessitates the use of masks.

What is Droplet Precautions?

300

The point at which organisms enter a new host.

What is the Portal of Entry?

300

Organisms are multiplying and growing.

What is the Incubation Period?

300

Helps prevent the wearer from inhaling large-particle aerosols and small-particle droplet nuclei.

What are Masks?

300

Hand hygiene required for C. difficile. 

What is Soap and Water?

400

Used for scabies infections.

What is Contact Precautions?

400

What is the point of escape from the reservoir?

What is the Portal of Exit?

400

Specific signs and symptoms of disease are present.

What is the Full (Acute) Stage?

400

Worn when there is a risk of contaminating mucous membranes.

What is Protective Eyewear?

400

Bacteria typically found in skin creases and considerable friction is required to remove it.

What is Resident Bacteria?

500

Used for varicella (chickenpox) infections.

What is Airborne Precautions?

500

How infectious agents get around.

What is the Mode of Transmission?

500

Vague and nonspecific signs of disease are present.

What is the Prodromal Stage?

500

Used for trash that has liquid or semiliquid blood or other potentially infective material.

What is a Red (BIOHAZARD) Bag?

500

Bacteria easily removed by handwashing.

What is Transient Bacteria?

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