Core IPC Practices: Hand Hygiene, PPE and Standard Precautions

Most healthcare-associated infections are prevented not by high technology but by a handful of everyday practices done reliably. Hand hygiene, personal protective equipment and precautions are the foundations of infection prevention — simple in theory, powerful in effect, and easy to let slip. This guide explains the core practices every healthcare worker should know, and why consistency matters more than complexity.

If infection prevention had one golden rule, it would be hand hygiene. Hands are the main route by which pathogens travel between patients, staff and surfaces, and cleaning them at the right moments breaks that chain more effectively than almost anything else. The World Health Organization's "Five Moments for Hand Hygiene" frames when it matters:

Both alcohol-based hand rub and soap-and-water have their place — hand rub for most situations, soap and water when hands are visibly soiled or after certain exposures. The challenge is never knowing how; it's doing it every time, which is why hand-hygiene compliance is monitored so closely in accredited facilities.

PPE — gloves, gowns, masks, eye protection — creates a barrier between the wearer and infectious material. Using it well is about the right equipment, at the right time, put on and taken off correctly. Two principles matter most: choose PPE based on the anticipated exposure, and pay special attention to safe removal (doffing), since that's when contamination most often happens. PPE complements hand hygiene; it never replaces it.

Standard precautions are the basic practices applied to every patient, regardless of diagnosis, on the assumption that any patient could carry an infectious agent. They include hand hygiene, appropriate PPE, safe injection practice, respiratory hygiene/cough etiquette, safe handling of sharps, and cleaning of the environment and equipment. Standard precautions are the floor beneath all infection prevention — the practices that should never be skipped.

When a patient is known or suspected to carry an organism that needs extra containment, transmission-based precautions are added on top of standard precautions. There are three types, matched to how the organism spreads:

Choosing the right precaution depends on the organism, which is why accurate identification and prompt isolation are so important — and why infection preventionists spend so much time getting them right.

The hard truth of infection prevention is that these measures only work if they're applied reliably, every time, by everyone. A hand-hygiene rate of 95% still means one in twenty opportunities missed — and pathogens exploit exactly those gaps. That's why the best facilities focus relentlessly on consistency: monitoring compliance, giving feedback, removing barriers, and building a culture where the safe practice is simply the normal practice. The concepts are simple; the discipline is the skill.

Every core practice makes more sense once you see the model behind it: the chain of infection. An infection requires a sequence — an infectious agent, a reservoir, a portal of exit, a mode of transmission, a portal of entry, and a susceptible host. Prevention works by breaking any link in that chain: hand hygiene and precautions interrupt transmission, sterilisation removes the agent, immunisation reduces host susceptibility, and so on. Infection preventionists think in these terms constantly, because it turns a long list of rules into a single, logical framework.

Ultimately, core practices only work if people perform them reliably, which makes culture the deciding factor. A strong safety culture is built through visible leadership example, education that explains the why, honest feedback on real compliance data, and removing the friction that makes the safe choice harder (accessible hand rub, well-placed PPE). The aim is an environment where doing the safe thing is simply the normal thing — the point at which infection prevention stops depending on individual willpower and becomes how the facility works.