Infection control

Infection control is the discipline of stopping infections from spreading within healthcare settings. Every practice in it targets the chain of infection — the sequence of pathogen, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. Break any single link, and transmission stops.

The everyday tools are familiar: hand hygiene (the single most effective measure), personal protective equipment such as gloves, gowns, masks, and eye protection, safe handling and disposal of sharps, cleaning and disinfection of surfaces, and sterilization of instruments. Standard precautions apply these protections to every patient encounter on the assumption that any blood or body fluid may be infectious; transmission-based precautions add contact, droplet, or airborne measures for patients with known or suspected infections.

Infection control matters because healthcare-associated infections harm patients who came in for something else entirely — surgical site infections, catheter-associated urinary tract infections, and central line bloodstream infections are leading examples. Regulatory standards, including OSHA's bloodborne pathogens rules, make these practices legal obligations for healthcare employers and workers, not just good habits.

Infection control is tested across healthcare certification exams. The CCMA exam covers the cycle of infection and OSHA standards, the NCLEX devotes a section of safe and effective care environment to safety and infection control, and the NPTE-PTA tests infectious disease and related precautions within its other-systems content. Expect questions on hand hygiene, PPE selection and sequence, and matching precautions to specific infections.