NCLEX Infection Control: Isolation Precautions & PPE
A clear NCLEX guide to standard and transmission-based precautions — contact, droplet, and airborne — the PPE and room each needs, and the conditions to memorize.
By the Clesial Editorial Team · Reviewed by Clesial Editorial Team, Clinical Content Review
Updated August 3, 2026 · 7 min read
Infection prevention and control shows up all over the NCLEX because it protects every client — it's part of the Safety and Infection Prevention and Control category, one of the larger slices of the exam. The test rarely asks you to define a term; it hands you an organism or a scenario and wants the right precaution, the right protective equipment, and the right room. Learn the pattern and these become fast points.
Standard precautions apply to everyone
Standard precautions are the baseline for every client, regardless of diagnosis. They assume any body fluid could be infectious and include hand hygiene; gloves, gown, mask, and eye protection chosen by the exposure you anticipate; safe handling and disposal of sharps; and respiratory hygiene. You never turn them off — transmission-based precautions are added on top when an organism spreads a particular way.
Transmission-based precautions
When a client has (or is suspected of having) an organism with a known route of spread, you layer one of three precaution types over standard precautions:
Transmission-based precautions add to standard precautions, by route of spread.
| Precaution | Barrier / PPE | Room / placement | Example conditions |
|---|---|---|---|
| Contact | Gloves + gown | Private room or cohort; dedicated equipment | MRSA and VRE, C. difficile, scabies, RSV, norovirus |
| Droplet | Surgical mask (within about 3–6 ft) | Private room; door may stay open | Influenza, pertussis, meningococcal disease, mumps, rubella |
| Airborne | Fit-tested N95 respirator | Negative-pressure room (AIIR), door closed | Tuberculosis, measles (rubeola), varicella (chickenpox) |
Memory hooks
Airborne is the short list — think M-T-V: Measles, TB, Varicella — and it's the one that needs an N95 and a negative-pressure room. Contact means gown and gloves; droplet means a surgical mask up close.
The alcohol exception: C. difficile and norovirus
For C. difficile — and norovirus — alcohol-based hand sanitizer does not kill the spores. Wash with soap and water instead, use contact precautions, and clean surfaces with a bleach or other sporicidal agent. This soap-and-water detail is a favorite NCLEX distractor: the tempting wrong answer is reaching for the alcohol foam.
Putting on and taking off PPE
The sequence matters, and the exam tests it. Put PPE on clean-to-dirty and take it off dirtiest-first so you don't contaminate yourself:
- Donning: gown, then mask or N95 respirator, then goggles or face shield, then gloves.
- Doffing: gloves, then goggles or face shield, then gown, then mask or respirator — with hand hygiene at the end (and any time your hands become contaminated).
How the NCLEX tests infection control
- Match the organism to the precaution and PPE — the classic "which room, what do you wear" item.
- Know negative vs positive pressure. Airborne isolation is negative pressure; a protective environment for a severely immunocompromised client is positive pressure.
- Watch the C. diff / norovirus soap-and-water trap.
- Standard precautions are never optional — they apply even when no transmission-based precaution is ordered.
Confirm the current guidance
Precaution categories, PPE sequences, and specific organism lists are set by the CDC and your facility's policy and change over time. Use this to build the pattern, then follow current CDC guidance and your facility protocol, and confirm exam specifics against the official NCSBN test plan. Clesial is an independent prep platform and is not affiliated with or endorsed by NCSBN.
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Bottom line
Standard precautions apply to every client; transmission-based precautions add to them by route — contact (gown + gloves), droplet (surgical mask), and airborne (N95 + negative-pressure room, for measles, TB, and varicella). Remember the C. difficile soap-and-water exception and the PPE don/doff order. Keep this next to the lab values cheat sheet as your high-yield quick reference.
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- NCLEX Lab Values to Know: A Nursing Cheat SheetA printable NCLEX-RN lab values cheat sheet — normal adult ranges for electrolytes, renal, hematology, ABGs, and therapeutic drug levels, with the nursing action each one points to.