# Infection Control Precautions

> Nursing notes on infection control precautions: standard precautions and airborne, droplet and contact precautions, PPE use and biomedical waste rules.

- Canonical URL: https://prepelephant.com/topics/allied/nursing/infection-control-precautions
- Exam / course: Allied Health · Subject: Nursing
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-02
- Last updated: 2026-10-02
- How to cite: "Infection Control Precautions", PrepElephant, https://prepelephant.com/topics/allied/nursing/infection-control-precautions

## Direct answer

Infection control precautions operate at two levels: standard precautions, applied to every patient because blood and body fluids may carry infection, and transmission-based precautions, added when a pathogen spreads by a specific route. The three transmission-based categories are airborne, droplet and contact precautions, and they supplement — never replace — standard precautions such as hand hygiene, personal protective equipment, safe sharps handling and biomedical waste segregation.

## What you must remember

- Standard precautions: hand hygiene, PPE chosen by task, respiratory hygiene, safe injection practice without needle recapping, appropriate patient placement and careful handling of linen, equipment and spills.
- Airborne precautions (tuberculosis, measles, chickenpox, disseminated herpes zoster): fit-tested N95 respirator, negative-pressure isolation room with door closed, surgical mask on the patient during transport.
- Droplet precautions (influenza, pertussis, meningococcal disease, mumps, rubella, diphtheria): surgical mask within about 1 metre (3 feet) of the patient, single room or cohorting, patient masking on transport.
- Contact precautions (MRSA, scabies, respiratory syncytial virus, conjunctivitis, draining wounds, Clostridioides difficile): gloves and gown on entry, dedicated equipment, single room where possible.
- PPE order: don gown, mask, eye protection, then gloves; doff in reverse — gloves, gown, eye protection, mask last — with hand hygiene immediately after.
- India's Biomedical Waste Management Rules colour-code waste: yellow for infected waste, red for contaminated recyclables, white puncture-proof containers for sharps, blue for glassware.
- Needle-stick injuries: wash without squeezing, report immediately and start post-exposure prophylaxis for HIV and hepatitis B per protocol without delay.

## Common confusion

Masks are the classic trap: an N95 respirator filters airborne droplet nuclei and must seal to the face, while a surgical mask protects mucous membranes from large droplets. Diseases get misplaced — chickenpox and tuberculosis are airborne, not droplet, while meningococcal disease needs only droplet precautions until 24 hours of effective therapy. Clostridioides difficile deserves special memory: alcohol rub fails against spores, so soap-and-water handwashing plus contact precautions is the answer.

## Exam-focused takeaway

Category-matching dominates: a list of diseases must map to airborne, droplet or contact, so memorise the standard examples. Learn the donning and doffing orders, the N95-versus-surgical-mask logic and the 1-metre droplet rule. Waste questions test the colour codes, and occupational-health stems test needle-stick first aid. Remember that precautions begin on suspicion, before confirmation, and continue for the documented duration — for example, chickenpox until all lesions have crusted.

## Frequently asked questions

### What are standard precautions?

The minimum applied to all patients — hand hygiene, task-appropriate PPE, respiratory hygiene, safe sharps practice and correct handling of linen, equipment and waste.

### Which diseases need airborne precautions?

Tuberculosis, measles, varicella and disseminated herpes zoster — managed with an N95 respirator and negative-pressure isolation.

### What is the difference between droplet and contact precautions?

Droplet precautions protect mucous membranes from large droplets within about a metre using a surgical mask; contact precautions protect hands and clothing using gloves and gown.

### In what order is PPE removed?

Gloves first, then gown, then eye protection and finally the mask, with safe disposal and immediate hand hygiene.

### How is biomedical waste segregated in India?

Into colour-coded streams under the Biomedical Waste Management Rules — yellow for infected waste, red for contaminated recyclables, white boxes for sharps and blue for glass.