Here's the thing about infection control questions on the NCLEX. They are not hard. They are repeatable. The exam tests the same five categories of organisms in the same five ways every single time, and yet students keep getting them wrong because they've never sat down and made the mental map.
Let's make the map.
If you can name the precaution and the PPE for ten common organisms, you've already won this section.
Standard Precautions: The Baseline
Standard precautions apply to every patient, all the time. They include hand hygiene, gloves when touching body fluids, gown if soiling is likely, mask and eye protection if splashing is likely. This is the floor. Everything else is built on top of this.
The NCLEX trap: students sometimes assume they only need standard precautions for "low-risk" patients. No. Standard precautions are universal. There's no patient where you don't use them.
Contact Precautions
What it is: A category for organisms that spread by direct touch or environmental surfaces.
PPE: Gloves and gown when entering the room. Private room or cohort patients.
Common organisms on the NCLEX:
- MRSA
- VRE
- C. difficile (with extra rules — see below)
- RSV
- Scabies, lice
- Open or draining wounds
The C. diff curveball: alcohol-based hand sanitizer does not kill C. diff spores. You must wash with soap and water. The NCLEX loves this question. If the answer choice has the nurse using hand gel after a C. diff patient, that answer is wrong.
Droplet Precautions
What it is: Organisms spread in respiratory droplets that travel a short distance (less than 6 feet) when the patient coughs, sneezes, or talks.
PPE: Surgical mask within 6 feet of the patient. Private room or cohort. The patient wears a mask when transported out of the room.
Common organisms on the NCLEX:
- Influenza
- Pertussis (whooping cough)
- Mumps
- Rubella (German measles)
- Meningococcal meningitis
- Group A streptococcus (pharyngitis, scarlet fever, pneumonia)
- Mycoplasma pneumonia
Memory Hook for Droplet: Think FIRMM-Strep — Flu, Influenza, Rubella, Mumps, Meningitis, Strep. Not perfect, but it sticks.
Airborne Precautions
What it is: Organisms that travel on tiny droplet nuclei or dust particles that stay suspended in the air. They can drift across a room and infect someone who never touched the patient.
PPE: N95 respirator (or PAPR) for the nurse. Negative-pressure airborne isolation room. Door stays closed.
The big three:
- Tuberculosis (TB)
- Measles (rubeola)
- Varicella (chickenpox, disseminated zoster)
An easy mnemonic: MTV — Measles, Tuberculosis, Varicella.
The NCLEX cares deeply about TB. Suspected TB? Patient in airborne isolation immediately, before confirmation. Confirmed? Continue isolation until three consecutive negative AFB sputum cultures. Anyone entering the room wears an N95.
Special Cases That Trip Students Up
Neutropenic / Protective Precautions
This is the reverse of every other precaution — you're protecting the patient from the world, not the world from the patient. Neutropenic patients (ANC less than 500) need a private room, strict hand hygiene, no fresh flowers, no raw fruits or vegetables, and no sick visitors.
If the question describes a chemo patient with a low ANC, the answer is neutropenic precautions, not contact.
COVID and Novel Respiratory Pathogens
The current CDC recommendation for COVID is N95 + eye protection + gown + gloves. Treat it like an airborne-plus precaution for testing purposes — when in doubt, choose the more protective option.
Multidrug-Resistant Organisms
MRSA, VRE, ESBL, CRE — these are contact precautions. The room may have signage. The PPE is gowns and gloves. Anything that can spread on hands or surfaces is contact.
The Removal Order: PPE Doffing
This shows up on the NCLEX in roughly this order: gloves, gown, goggles, mask. The CDC has variations, but the principle is the same — remove the dirtiest items first, save the mask for last because it's been protecting your airway, then wash your hands immediately.
An old mnemonic: "Going Going Gone Mask" — Gloves, Gown, Goggles, Mask.
Door Open or Closed?
- Standard: door can be open
- Contact: door can be open
- Droplet: door can be open
- Airborne: door must be CLOSED
- Neutropenic: door must be CLOSED (to protect the patient)
If the NCLEX question describes a nurse leaving the door of a TB patient's room open, the answer is "close the door."
The Five-Question Rule
For every infection control question, ask:
- What's the organism?
- What category of precaution does it require?
- What PPE does the nurse wear?
- Is the patient in the right kind of room?
- Is the patient's transport handled correctly?
If you can answer those five, you can answer the question.
Infection control is rote. It's literally one of the few things on the NCLEX that rewards pure memorization combined with categorization. Make the chart. Drill it. Move on.