Concept
Healthcare-associated infection
Infection acquired in a care setting
High-yield clue
Device- and procedure-related infections (catheters, ventilators, surgical sites) by resistant organisms are the classic HAI framing.
Overview
A healthcare-associated (nosocomial) infection is one acquired during care in a hospital or other facility, often linked to devices, procedures, or resistant organisms. It is a major patient-safety and antimicrobial-resistance topic.
Classification
- Public-health concept
- Facility-acquired infection
- Device- and procedure-associated
Lab & identification clues
- Catheter and ventilator association vocabulary (CLABSI, CAUTI, VAP)
- Biofilm on indwelling devices resists clearance
- Often involves multidrug-resistant organisms (MRSA, VRE, CRE)
Associations
- Hand hygiene and aseptic technique reduce HAIs
- C. difficile is a classic facility-associated pathogen
- Surveillance and bundles frame prevention
Commonly confused with
- Community-acquired vs healthcare-associated
- Colonization vs infection
Your notes
Original microbiology concept summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC/WHO topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment selection, infection-control instructions, or specimen-handling guidance.